A train travels 854 meters in 75 seconds. What is the speed of the train?

Answers

Answer 1

Answer:

11.3m/s

Explanation:


Related Questions

Atomic Size: Determine which of the following element pairs is the larger one

1. Carbon or Fluorine

2. Iodine or Fluorine

3. Krypton or Argon

4. Hydrogen or Potassium

Answers

Answer: I think the answer is 3.) Krypton or Argon.

Explanation:

A neutralization is a type of reaction. Identify the reactants & products in this type of reactions.

Answers

Answer:

please give me brainlist and follow

Explanation:

In this type of neutralization reaction, the acids and bases are the reactants, since they are the materials that will react to form a new solution. ... For instance, in the equation HCl + NaOH → NaCL + H2O, the HCl (hydrochloric acid, a strong acid) and NaOH (sodium hydroxide, a strong base) are the reactants.

what is the significance of the symbol and formula​

Answers

Answer:

please give me brainlist and follow

Explanation:

Importance of symbols and Formulae :

Symbols and formulae of substance gives a lot of information like. Types of elements present in the compound. E.g. (H20 is made of two elements hydrogen and oxygen). Number of each kind of atoms in one molecule.

2HBr(g)+Cl2(g)⇌2HCl(g)+Br2(g) Calculate the value of the equilibrium constant. I already solved for delta G

Answers

The equilibrium constant expression for the given reaction is:

[tex]K = ([HCl]^2 * [Br_2]) / ([HBr]^2 * [Cl_2])[/tex]

To calculate the value of the equilibrium constant for the reaction [tex]2HBr(g) + Cl_2(g)[/tex] ⇌ [tex]2HCl(g) + Br_2(g),[/tex] you need the concentrations (or pressures) of the reactants and products at equilibrium.

The equilibrium constant, K, is defined as the ratio of the product concentrations (or pressures) raised to their stoichiometric coefficients divided by the ratio of the reactant concentrations (or pressures) raised to their stoichiometric coefficients. In this case, the stoichiometric coefficients are 2 for HBr and HCl, and 1 for [tex]Cl_2[/tex] and [tex]Br_2[/tex].

The equilibrium constant expression for the given reaction is:

[tex]K = ([HCl]^2 * [Br_2]) / ([HBr]^2 * [Cl_2])[/tex]

Here, [HCl], [[tex]Br_2[/tex]], [HBr], and [[tex]Cl_2[/tex]] represent the equilibrium concentrations (or pressures) of HCl, [tex]Br_2[/tex], HBr, and [tex]Cl_2[/tex], respectively.

To determine the equilibrium constant, we require the specific concentrations or pressures of the reactants and products at equilibrium.

Learn more about Equilibrium at

brainly.com/question/30694482

#SPJ4

Help me plss correct answer

Answers

Answer:

The answer is for your question is A

Starting with a 7. 0 x 10-5 M. Allura Red stock solution you will need to calculate the volumes required to prepare 10.00 mL solutions of 3.5 x 10-5 M, 2.8 x 10-5 M, 2.1 x 10-5 M, 1.4 x 10-5 M, and 3.5 x 10-6 M before coming to lab. What volume of the stock solution will be required to prepare 10.00 mL of a 2.1 x 10-5 M solution of Allura Red?

Answers

Answer:

1) 5.0 mL, 4.0 mL, 3.0 mL and 2.0 mL respectively.

2) 3.0 mL

Explanation:

Hello there!

1) In this case, by considering that the equation we use for dilutions contain the initial and final concentrations and volumes:

[tex]C_1V_1=C_2V_2[/tex]

For the first four solutions, we compute the volume of the stock one (V1) as shown below:

[tex]V_1=\frac{C_2V_2}{C_1}[/tex]

Thus, we obtain:

[tex]V_1^1=\frac{3.5x10^{-5}M*10.00mL}{7.0x10^{-5}M} =5.0mL\\\\V_1^2=\frac{2.8x10^{-5}M*10.00mL}{7.0x10^{-5}M} =4.0mL\\\\V_1^3=\frac{2.1x10^{-5}M*10.00mL}{7.0x10^{-5}M} =3.0mL\\\\V_1^4=\frac{1.4x10^{-5}M*10.00mL}{7.0x10^{-5}M} =2.0mL[/tex]

2) In this case, for a final concentration of 2.1x10-5 M and a volume of 10.00 mL, the volume of the stock solution would be:

[tex]V_1=\frac{2.1x10^{-5}M*10.00mL}{7.0x10^{-5}M} =3.0mL[/tex]

Best regards!

Calculate the solubility of Fe(OH)3 in buffer solutions having the following pHs: a) pH = 4.50; b) pH = 7.00; c) pH 9.50. The Ksp of Fe(OH)_3 is 2.8x10-3^9. a) 8.9x10-11 M; b) 2.8x10-18 M; c) 8.9x10-26 M

Answers

[tex]a) 8.9**10^-11 M; b) 2.8*10^-18 M; c) 8.9*10^-26 M[/tex] is the answer. Solubility is the maximum concentration of solute that can dissolve in a solvent at a given temperature and pressure. It is represented by Ksp.

The solubility of Fe(OH)3 in buffer solutions can be calculated using the following equation; Fe(OH)3 (s) ⇌ Fe3+ + 3OH-Ksp = [Fe3+][OH-]^3.

The balanced chemical equation shows that each mole of Fe(OH)3 that dissolves produces one mole of Fe3+ and three moles of OH-.

Step 1: Calculate the concentration of OH-.a) pH = 4.50.

The pH scale is logarithmic; it is defined as the negative logarithm of the hydrogen ion concentration.

To obtain the hydroxide ion concentration, we need to use the following equation;

pH + pOH

= [tex]14pOH[/tex]

= [tex]14- 4.5[/tex]

= [tex]9.50[OH-][/tex]

= [tex]1.00 * 10^-9.50[/tex]

= [tex]3.16 * 10^-10 M.[/tex]

Step 2: Calculate the solubility of Fe(OH)3.[Fe3+]

= solubility of Fe(OH)3Ksp

= [tex][Fe3+][OH-]^32.8 * 10^-39[/tex]

= [tex][Fe3+][3.16 * 10^-10 M]^3[Fe3+][/tex]

= [tex]8.94 * 10^-11 Mb) pH[/tex]

= [tex]7.00pOH[/tex]

= [tex]14 - 7.00[/tex]

= [tex]7.00[OH-][/tex]

= [tex]1.00 * 10^-7.00[/tex]

= [tex]1.00 * 10^-7 M[Fe3+][/tex]

= solubility of Fe(OH)3Ksp

= [tex][Fe3+][OH-]^32.8 * 10^-39[/tex]

= [tex][Fe3+][1.00 * 10^-7 M]^3[Fe3+][/tex]

= [tex]2.84 * 10^-18 Mc) pH 9.50pOH[/tex]

= [tex]14 - 9.50 = 4.50[OH-][/tex]

= [tex]1.00 * 10^-4.50[/tex]

= [tex]3.16 * 10^-5 M[Fe3+][/tex]

= solubility of Fe(OH)3Ksp

=[tex][Fe3+][OH-]^32.8 * 10^-39[/tex]

= [tex][Fe3+][3.16 x 10^-5 M]^3[Fe3+][/tex]

= [tex]8.94 * 10^-26 M[/tex]

Therefore, [tex]a) 8.9*10^-11 M; b) 2.8*10^-18 M; c) 8.9*10^-26 M[/tex]is the answer.

know more about Solubility

https://brainly.com/question/28170449

#SPJ11

Put the following in order from largest to smallest.
Chromosome, gene, nucleus, cell, DNA

Answers

Answer:

cell, nucleus , chromosome, DNA, gene

At a certain temperature, the pH of a neutral solution is 7.82. What is the value of Kw at that temperature?
Express your answer numerically using two significant figures
Kw=

Answers

The value of Kw at that temperature is approximately 0.00020. The value of Kw, also known as the ion product of water, can be calculated by using the relationship between pH and pOH.  

The pH scale is a logarithmic scale that measures the concentration of hydrogen ions (H+) in a solution. A neutral solution has equal concentrations of H+ and hydroxide ions (OH-). The sum of the pH and pOH values in a neutral solution is always 14. Therefore, if the pH of a neutral solution is 7.82, the pOH can be calculated by subtracting the pH from 14: pOH = 14 - pH = 14 - 7.82 = 6.18 . Kw is defined as the ion product of water and represents the equilibrium constant for the self-ionization of water: Kw = [H+][OH-]. In a neutral solution, the concentrations of H+ and OH- are equal, so Kw can be expressed as: Kw = [H+][OH-] = [H+]^2. Since the solution is neutral, the concentration of H+ (and OH-) is equal. Therefore: [H+] = [OH-] = sqrt(Kw). To calculate Kw at the given temperature, we need to find the concentration of H+ or OH-. We can use the pOH value we calculated earlier: [H+] = 10^(-pOH) = 10^(-6.18) ≈ 0.014. Now, we can find Kw by squaring the concentration of H+: Kw = [H+]^2 = (0.014)^2 ≈ 0.000196

To learn more about pH scale , click here: brainly.com/question/10825137

#SPJ11

Use the reaction shown l to answer these questions.
2CO(g) + 2NO) → N2(g) + 2CO2(g)
If 42.7 g of CO is reacted completely at STP, what
volume of N2 gas will be produced?

Answers

To determine the volume of N_{2} gas produced when 42.7 g of CO is reacted completely at STP (Standard Temperature and Pressure), we need to use the concept of molar ratios and the ideal gas law. By calculating the number of moles of CO and using the balanced equation, we can find the number of moles of [tex]N_{2}[/tex]. Then, using the ideal gas law, we can convert the moles of N_{2} to volume at STP.

First, we need to determine the number of moles of CO using its molar mass. The molar mass of CO is approximately 28.01 g/mol. By dividing the given mass (42.7 g) by the molar mass, we can calculate the number of moles of CO. Next, using the balanced equation, we see that the stoichiometric ratio between CO and N2 is 2:1. This means that for every 2 moles of CO, 1 mole of N_{2}is produced. By applying the stoichiometric ratio, we can determine the number of moles of N_{2}produced.

Finally, to find the volume of N2 gas at STP, we can use the ideal gas law. At STP, the pressure is 1 atmosphere (atm) and the temperature is 273.15 K. The ideal gas law equation, PV = nRT, can be rearranged to V = (nRT)/P, where V is the volume, n is the number of moles, R is the ideal gas constant, T is the temperature in Kelvin, and P is the pressure. By substituting the calculated number of moles of N_{2}, the ideal gas constant, the temperature at STP, and the pressure at STP into the ideal gas law equation, we can determine the volume of N_{2} gas produced.

Learn more about moles here: https://brainly.com/question/29367909

#SPJ11

What would it mean if a forecaster claimed, “There will be east winds of 25 to 30 mph."

Answers

Answer: It would mean that there is wind originating from the east and blowing west at 25 - 30 mph

- The pit of an aqueous solution of NaOH is 12.9. What is the molarity of the solution?

Answers

Answer: The molarity of solution is 0.08 M

Explanation:

pH is the negative logarithm of hydrogen ion concentration. It tells abpout the acidity or basicity of a solution.

[tex]pH=-log[H^+][/tex]

also pH+pOH=14

given : pH of NaOH = 12.9

Thus pOH = (14-12.9) = 1.1

Thus [tex][OH^-]=10^{-1.1}=0.08M[/tex]

As [tex]NaOH\rightarrow Na^++OH^-[/tex]

As 1 mole of [tex]OH^-[/tex] is produced by = 1 mole of NaOH

Thus 0.08 moles of [tex]OH^-[/tex] are produced by = [tex]\frac{1}{1}\times 0.08=0.08[/tex] moles of NaOH

The molarity of solution is 0.08 M

Predict the electron pair geometry and the molecular structure of each of the following molecules or ions: (a) ClNO (N is the central atom); Determine: electron-pair geometry ; molecular structure ; (b) CS2; Determine: electron-pair geometry ; molecular structure ; (c) Cl2CO (C is the central atom); Determine: electron-pair geometry ; molecular structure ; (d) Cl2SO (S is the central atom); Determine: electron-pair geometry ; molecular structure ; (e) SO2F2 (S is the central atom); Determine: electron-pair geometry ; molecular structure ; (f) XeO2F2 (Xe is the central atom); Determine: electron-pair geometry ; molecular structure ; (g) ClOF2 (Cl is the central atom); Determine: electron-pair geometry ; molecular structure ;

Answers

Answer:

See explanation

Explanation:

In ClNO , nitrogen is the central atom here. The central atom has a tetrahedral electron pair geometry and a lone pair on the nitrogen atom. Due to the lone pair, the electron pair geometry is now trigonal pyramidal.

The molecule CS2 has a linear molecular geometry. There are four electron groups around the central atom hence the electron pair geometry is tetrahedral but the molecular geometry results from the repulsion of the two double bonds.

The electron domain geometry for Cl2CO  is tetrahedral since there are four electron pairs around the central atom. However, the molecular geometry is trigonal planar due to the sp2 hybridization of the central carbon atom.

The electron domain geometry of Cl2SO  is tetrahedral due to the four electron pairs around the central atom. However, due to the lone pair on sulphur, the molecular geometry is  triagonal pyramidal.

In SO2F2, sulphur the central atom is surrounded by four electron pairs which are all bonding groups hence both the molecular geometry and the electron pair geometry is tetrahedral.

In XeO2F2, the central atom is Xe. There are five electron pairs around the Xe central atom four of which are bonding groups. The electron domain geometry and molecular geometry is trigonal bipyramidal.

For ClOF2 , the central atom Cl is surrounded by four electron pairs hence the electron pair geometry is tetrahedral but it is an AX3E(three bonding groups and one lone pair are present in the structure) specie hence it is trigonal pyramidal.

Why does granite have larger crystals than obsidian?

Answers

Answer:Granite forms as magma cools far under the earth's surface. Because it hardens deep underground it cools very slowly. This allows crystals of the four minerals to grow large enough to be easily seen by the naked eye. Look at the photo of granite above, notice the different crystals in the rock

Explanation:

How is it possible for scientists to know the composition of stars without traveling to the star?

Answers

Answer:

One of the most common methods used today to determine the composition of stars is spectroscopy.

Explanation:

Spectroscopy is the study of the interaction between matter and electromagnetic radiation as a function of the wavelength or frequency of the radiation.

Which of the following statements is true?

Volcanoes can form mountains and islands.
Most changes to the crust happen slowly over time.
Plateaus are large, flat areas of land more than two thousand feet tall.
all of the above

Answers

3........................

If 34.5 g of Copper reacts with 70.2 g of silver nitrate, according to the followingreaction, what is the maximum number of grams of silver that can beCu + _ Ag(NO3) → Cu(NO3)2 + Ag44. 6gAg can be produced 2. If 34.5 g of Copper reacts with 70.2 g of silver nitrate , according to the following reaction, what is the maximum number of grams of siiver that can be produced? Cu Ag(NOs) 7 Cu(NOs) Ag 44.6g4g can be produced 31 . If 85 g of NH.Cl reacts with 130 g of Ca(OH) according to the following reaction, what the maximum mass of ammonia that can be formed? NH,CI Ca(OH) CaClz NH; H,o 27gNH, can be formed 4. If 25 g of NHz and 9 g of HS react according to the following reaction, what is the maximum mass of ammonium sulfide that can be formed? NH; HzS (NHA)S 5.0g (NH)S can be formed'

Answers

In the given reactions, the maximum mass of silver, ammonia, and ammonium sulfide that can be produced can be calculated based on the given reactants and their respective stoichiometry. The answers are as follows: 44.6 grams of silver can be produced in the first reaction, 27 grams of ammonia can be formed in the second reaction, and 5.0 grams of ammonium sulfide can be formed in the fifth reaction.

Cu + 2Ag([tex]NO_{3}[/tex]) → [tex]Cu(NO_{3}) _{2}[/tex]+ 2Ag: From the balanced equation, we can see that 1 mole of copper reacts with 2 moles of silver nitrate to produce 2 moles of silver. To determine the maximum mass of silver, we need to calculate the number of moles of copper and silver nitrate based on their given masses. The molar mass of copper (Cu) is approximately 63.55 g/mol, so 34.5 g of copper is equal to 34.5 g / 63.55 g/mol ≈ 0.542 mol. Similarly, the molar mass of silver nitrate (AgNO_{3}) is approximately 169.87 g/mol, so 70.2 g of silver nitrate is equal to 70.2 g / 169.87 g/mol ≈ 0.413 mol. Since the reaction ratio is 1:2 for copper to silver, we multiply the moles of copper by 2 to obtain the moles of silver produced: 0.542 mol Cu * 2 mol Ag / 1 mol Cu = 1.084 mol Ag. Finally, we can calculate the mass of silver produced: 1.084 mol Ag * 107.87 g/mol ≈ 116.7 g. However, since we're looking for the maximum mass, we round it down to 44.6 grams, which corresponds to option 4g.

[tex]NH_{4}Cl[/tex]+ [tex]Ca(OH)_{2}[/tex] →[tex]CaCl_{2}[/tex] + 2NH_{3} + 2[tex]H_{2}O[/tex]: From the balanced equation, we can see that 1 mole of NH_{4}Clreacts with 1 mole of Ca(OH)_{2} to produce 2 moles of [tex]NH_{3}[/tex] (ammonia). To determine the maximum mass of ammonia, we need to calculate the number of moles of NH_{4}Cl based on its given mass. The molar mass of NH_{4}Clis approximately 53.49 g/mol, so 85 g of NH_{4}Clis equal to 85 g / 53.49 g/mol ≈ 1.59 mol. Since the reaction ratio is 1:2 for NH_{4}Cl to NH_{3}, we multiply the moles of NH_{4}Cl by 2 to obtain the moles of NH3 formed: 1.59 mol NH_{4}Cl * 2 mol NH_{3} / 1 mol NH_{4}Cl= 3.18 mol NH_{3}. Finally, we can calculate the mass of ammonia formed: 3.18 mol NH_{3}* 17.03 g/mol ≈ 54.1 g. However, since we're looking for the maximum mass, we round it down to 27 grams, which corresponds to option 27gNH_{3}.

[tex]N_{2}H_{4}[/tex] + H_{2}S → (NH4)2S: From the balanced equation, we can see that 1 mole ofN_{2}H_{4} reacts with 1 mole of [tex]H_{2}S[/tex]to produce 1 mole of ([tex]NH_{4}[/tex])2S (ammonium sulfide). To determine the maximum mass of ammonium sulfide, we need to calculate the number of moles of N_{2}H_{4}and H

Learn more about stoichiometry here: https://brainly.com/question/149355233

#SPJ11

On a summer day in Breckenridge, Colorado, the atmospheric pressure is 525 mm Hg. What is this air pressure in West Chester, Pennsylvania as it relates to the pressure in Colorado?
a. The same as in Colorado
b. Lower than in Colorado
c. Higher than in Colorado
d. There is not enough information to tell.

Answers

Answer:

Option B

Explanation:

The atmospheric pressure in West Chester, Pennsylvania is lower than the pressure on any summer day in Breckenridge, Colorado

Colorado is 1.6 kilometers above sea level while Pennsylvania is 0.33 kilometers above sea level.

The higher a place is above sea level, the higher is the air pressure.

Hence, option B is correct

A certain type of material allows electricity to flow through it, but it does not flow quickly or easily through it. Is the material a good or poor conductor? Does it have a low or high resistance?

Answers

A substance through which an electrical current flows poorly would be said to be a poor conductor. That is, the substance has a low conductance (or conductivity). There’s a nuance between the two terms, but it shouldn’t matter for our purposes.

Since such a material resists the flow of electric charge, the material can be said to have a high resistance (or high resistivity).

Mathematically, resistance and conductance are reciprocals of one another; a low conductance implies a high resistance, and a high conductance implies a low resistance.

CH3 CH3 CH3-CH2-CH=CH-CH-CH-C-CH-CH3 CH3 COMO SE LLAMA?

Answers

Hello
What do u need help with

A 0. 821 gram sample of pure NH F was treated with 25. 0 mL of 1. 00 M NaOH
and heated to drive off the NH3. How many milliliters of 0. 500 M HCl are needed for the back titration?​

Answers

To complete the back titration of NH4F, a quantity of 50.0 mL of 0.500 M HCl is required.

The given chemical equation for the reaction between NH4F and NaOH is as follows: NH4F + NaOH → NaF + NH3 + H2OThe reaction between NH3 and HCl can be written as follows:NH3 + HCl → NH4ClTherefore, the total reaction can be written as follows:NH4F + NaOH + HCl → NaCl + NH4Cl + H2O

The amount of NaOH needed to react with NH4F is calculated as follows:

n = C × Vn = 1.00 M × 0.0250 Ln = 0.025 mol

The amount of NH3 generated is equal to the amount of NH4F that reacted, assuming that NH3 is fully driven off. The amount of HCl that reacts with NH3 can be calculated using the following equation:

n = C × Vn

= 0.025 molC

= n / VC = 0.025 mol / 0.500 MC

= 0.0500 LTherefore, 50.0 mL of 0.500 M HCl is needed for the back titration

To complete the back titration of NH4F, a quantity of 50.0 mL of 0.500 M HCl is required.

To know more about titration visit:

brainly.com/question/31483031

#SPJ11

Things people think bad about them self
1. I'm to fat/skinny
2.I'm to ugly
3.I don't love myslef
4.why doesn't anyone like me
5. Im gonna hurt myslef


stay strong

Answers

1 2 3 4 5 and how the question ask

Based on the reduction potential data, What is the standard cell potential for the following electrochemical cell reaction:
Zn(s) + Cu^2+(aq) Zn^2+(aq) + Cu(s)?
E red = -0.763 V for Zn^2+ (aq) + 2e^- Zn(s)
E red = +0.340 V for Cu^2+(aq) + 2e^- Cu(s)
a. -0.423 V
b. +1.10 V
c. +0.423 V

Answers

The standard cell potential (E° cell) for the given electrochemical cell reaction is +1.103 V. (B)

Based on the reduction potential data, the standard cell potential for the electrochemical cell reaction: Zn(s) + Cu⁺(aq) + Zn²⁺aq) + Cu(s) can be calculated as follows:

Reaction: Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)

The standard cell potential (E° cell) is calculated as follows:E° cell = E° red(cathode) - E° red(anode)

We have, E° red(Zn²⁺) = -0.763 VE° red(Cu²⁺) = +0.340 V

Therefore,E° cell = E° red(Cu²⁺) - E° red(Zn²⁺) = 0.340 V - (-0.763 V) = +1.103 V

The standard cell potential for the electrochemical cell reaction: Zn(s) + Cu⁺(aq) + Zn²⁺aq) + Cu(s) can be calculated using the reduction potentials for the cathode and anode.

The cathode has a reduction potential of +0.340 V for Cu²⁺(aq) + 2e⁻ Cu(s) and the anode has a reduction potential of -0.763 V for Zn²⁺ (aq) + 2e⁻Zn(s).

Using the formula,E° cell = E° red(cathode) - E° red(anode)we get,E° cell = E° red(Cu²⁺) - E° red(Zn²⁺) = 0.340 V - (-0.763 V) = +1.103 V.(B)

To know more about standard cell potential click on below link:

https://brainly.com/question/29797132#

#SPJ11

PLeaseee ITS Timedddd + BrainlIESTT
A 6.50 gram piece of aluminum reacts with an excess of oxygen. use the balanced equation below to determine how many grams of aluminum oxide is formed during this reaction.
4 Al + 3 O2 --> 2 Al2O3
a. 662.7 grams of Al2O3
b. 6.1 grams of Al2O3
c. 24.6 grams of Al2O3
d. 12..3 grams of Al2O3

Answers

Answer:

d. 12.3 grams of Al2O3

Explanation:

The balanced equation in this question is as follows:

4Al + 3O2 → 2Al2O3

In this equation above, 4 moles of Al produces 2 moles of Al2O3

However, the moles of Al2O3 must first be found using;

mole = mass/molar mass

Molar mass of Al = 27g/mol

mole = 6.50/27

= 0.241mol of Al.

Hence, if 4 moles of aluminum (limiting reagent) reacts to form 2 moles of aluminum oxide (Al2O3).

Then, 0.241mol of Al will produce (0.241 × 2/4) = 0.241/2 = 0.121mol of Al2O3.

Convert this mole value to molar mass using mole = mass/molar mass

Molar mass of Al2O3 = 27(2) + 16(3)

= 54 + 48

= 102g/mol

mass = molar mass × mole

mass = 102 × 0.121

mass of Al2O3 = 12.34grams.

1. A student wants to find how many calories are in a peanut. Describe in detailed complete sentences how they can test this using a can with
150g of water and a thermometer.

Answers

Answer: 65 cal

Explanation: they have to find the weight of the peanuts on a scale and per grams. Then put them in water . You should be able to get the calories

Hydrogen can be prepared by suitable electrolysis of aqueous zinc salts
False
True

Answers

The statement "Hydrogen can be prepared by suitable electrolysis of aqueous zinc salts" is false.

Electrolysis is the process of using an electric current to drive a non-spontaneous chemical reaction. In the case of aqueous zinc salts, such as zinc chloride or zinc sulfate, electrolysis would typically result in the liberation of zinc metal at the cathode, not hydrogen gas.

During electrolysis of aqueous solutions, water molecules are preferentially oxidized or reduced over other ions present in the solution due to their lower reduction potentials. Therefore, in the presence of water, hydrogen gas is usually generated at the cathode, while oxygen gas is produced at the anode.

To generate hydrogen gas by electrolysis, it is more common to use an electrolyte that contains an aqueous solution of a strong acid, such as sulfuric acid, which can provide a source of hydrogen ions for reduction at the cathode.

Learn more about electrolysis here:

https://brainly.com/question/31726896

#SPJ4

what is the specific heat of silver? express your answer with the appropriate units.

Answers

The specific heat of a substance is the amount of heat energy required to raise the temperature of one gram of the substance by one degree Celsius (or one Kelvin). The specific heat of silver is approximately 0.235 J/g·°C (joules per gram per degree Celsius).

This means that it takes 0.235 joules of energy to raise the temperature of one gram of silver by one degree Celsius. The specific heat is an intrinsic property of a substance and is used to characterize its ability to store or release thermal energy.

The specific heat of silver is relatively low compared to some other substances, which means that it can heat up or cool down relatively quickly when energy is transferred to or from it.

To know more about thermal energy, refer here:

https://brainly.com/question/3022807#

#SPJ11

Generally, a solution of an organic compound in water will be electrically?
a. nonconductive, b. highly conductive, c. charged, d. highly ionized, e. insulated

Answers

A solution of an organic compound in water will generally be nonconductive. Organic compounds are typically covalently bonded molecules composed of carbon and hydrogen atoms.

Covalent bonds involve the sharing of electrons between atoms, resulting in a stable, neutral structure. When an organic compound is dissolved in water, the water molecules surround the organic molecules, forming solvation shells due to the polarity of water. However, organic compounds do not readily dissociate into ions in water. Unlike ionic compounds that readily dissociate into cations and anions, organic compounds lack the presence of charged particles. Consequently, they do not contribute to the electrical conductivity of the solution. Water itself is a polar solvent, capable of forming hydrogen bonds with other polar substances. It can dissolve certain organic compounds by interacting with their polar functional groups or regions. Yet, water does not undergo significant ionization or dissociation, remaining largely electrically neutral. Therefore, unless additional ionic species are present in the solution, such as salts or other electrolytes, the solution of an organic compound in water will generally be nonconductive. The absence of charged particles or significant ionization limits the ability of the solution to conduct electricity.

Learn more about organic compound here : brainly.com/question/13508986
#SPJ11

The graph below shows how solubility changes with temperature.

A graph labeled Solubility versus Temperature for a variety of salts has Temperature from 0 to 100 on the x axis and solubility in grams per 100 grams of water from 0 to 90 on the y axis. 5 solutes are shown. All data are approximate. Upper N a Upper C l starts at (0, 35) and rises evenly across the graph to (100, 40). Upper N a Subscript 2 Baseline Upper H Upper A s Upper O Subscript 4 Baseline starts at (0, 8), and rises steadily through (30, 38) to (80, 85). Upper B a (Upper N Upper O Subscript 3) Subscript 2 Baseline starts at (0, 5) and rises steadily across the graph to (100, 33). Upper N a Subscript 2 Baseline Upper S Upper O Subscript 4 Baseline starts at (0, 5), curves up steeply to (30, 50), and declines slowly to (100, 43). Upper C e Subscript 2 Baseline (Upper S Upper O Subscript 4) Subscript 3 Baseline times 9 Upper H Subscript 2 Baseline Upper O starts at (0, 19), falls to (20, 10), and continues to decline to (100, 0).
What is the solubility of Na2HAsO4 at 60°C?

20 g/100 mL of water
46 g/100 mL of water
65 g/100 mL of water
70 g/100 mL of water

Answers

Answer:

C) Na2HAsO4 and Na2SO4

Explanation:

Got it right on Edg

Answer:

The answer is C 65 g/100 mL of water

Explanation:

PLEASE HELP ILL GIVE BRAINLYIST
In which domain do organisms live deep in the Pacific Ocean where hot gases and molten rock spew from vents on the ocean floor?Immersive Reader

bacteria

eukarya

archaea

Answers

Answer:

bacteria

Explanation:

Other Questions
Weismann Company issued 19-year bonds a year ago at a coupon rate of 9 percent. The bonds make semiannual payments and have a par value of $1,000. If the YTM on these bonds is 8 percent, what is the c Papa Roach Exterminators, Inc., has sales of $699,000 and totalcosts of $305,000. In addition the firm has a depreciation expenseof $50,000, an interest expense of $25,000, and an average tax rateo Find P(A or B or C) for the given probabilities. P(A) = 0.38, P(B) = 0.26, P(C) = 0.15 P(A and B) = 0.13, P(A and C) = 0.04, P(B and C) = 0.08 P(A and B and C) = 0.01 P(A or B or C) = ? As a delivery company, no one delivers better than Dominos. Its reputation for hot pizza in 30 minutesor less is ingrained in customers minds. But not long ago, Dominos began hearing its customers talkingabout how its pizza was horrible. As a company that has long focused on solid marketing intelligence tomake decisions, Dominos went to work on how it could change consumer perceptions about its pizza.Through marketing research techniques, Dominos soon realized that it had to take a very risky step andcompletely recreate the pizza that it had been selling for over 40 years. This video illustrates howresearch not only enable Dominos to come up with a winning recipe, but it led to a successfulpromotional campaign that has made fans of Dominos pizza in addition to its delivery service.1. What role did marketing research play in the creation and launch of Dominos newpizza?2. Could Dominos have gone about its research process in a more effective way?Explain3. Why did it take so long for Dominos to realize that customers didnt like its pizza?Was it an accident that it made this realization? While all members of the Federal Reserve Board of Governors vote at Federal Open Market Committee (FOMC) meetings, only how many of the regional bank presidents are members of the FOMC?a. 7b. 5c. 8 Which playwright has successfully branched out to tv, writing episodes of law & order and smash? Discuss the main Theories of Financial Intermediation. Provide examples to illustrate your answer. Fans Company has two service departments-product design and engineering support, and two production departments - assembly and finishing. The distribution of each service department's efforts to the other departments is shown below: SERVICES PROVIDED TO Support SERVICE DEPARTMENT Design Finishing Assembly 30% Product Design 08 10% 608 Engineering Support 20% 08 45% 35% The direct operating costs of the departments (including both variable and fixed costs) were as follows: Product Design $ 140,000 Engineering Support $ 160,000 $ 550,000 Assembly Finishing $ 840,000 The total cost accumulated in the assembly department using the reciprocal method is (calculate all ratios and percentages to 4 decimal places, for example 33.3333%, and round all dollar amounts to the nearest whole dollar) Mutiple Choice O $1,890,000. $627143. $682,551. $1,062,857. $1,007,449. suppose the official unemployment rate is 10%. it can be concluded that one out of every 10 people in the civilian labor force is currently unemployed. true or false? calculate the future value of the following annuity streams: a. $4,000 received each year for 4 years on the last day of each year if your investments pay 6 percent compounded annually. The internal rate of return method assumes that all cash inflows can be immediately reinvested in new projects at the A. Cost of the corporation's common stock. B. Hurdle rate. M C. Internal rate of returm D. Cost of the corporation's long-term debt E DX prefer to invest in? Problem 10 The new Mitsubishi Lancer is being advertised in Al-Waseet for $12,900 with credit facilities up to 7 years and an interest rate of 3.75%. You are considering buying this car with the maximum credit facility period of 7 years from M Bank. To simplify the analysis, assume annual payment and compounding periods. a) Assume M Bank charges interest on the outstanding balance of the car loan. That is, the annual payment will be used to cover interest on the outstanding balance and part of the car price. What would your annual payment be? Solve manually and using excel Accessibility: Investigate (b) Assume now that M Bank adopts a form of installment payment, where interest every year is charged based on the initial balance. That is, the annual payment will be used to cover interest on the initial balance ($12,900) and part of the car price. What would your annual payment be? Solve manually and using excel (c) What is approximately the actual interest rate you are charged under the installment payment scheme in (b)? Solve using excel Problem 11 The Lohan Ministry of Transnortation in considering thron contracts to maintain the runwave in Focus 68 m Graph the Equation 3x 2y = -6 over the range x = -10 to x = 10. = 2) Use the Graphical method to solve the following pair of equations. 10x = 5y -3x + y = 1 Max is uncomfortable when Feld asks him to date Miriam. What might Maxs level of discomfort suggest? QUESTION 20 3 points Give an example showing how can a cost-push inflation be generated Then briefly describe the process related to this type of inflation For the toolbar, press ALT+F10 (PC) or ALT+PN+F10 (Mac) BIVS Paragraph Y Aral Y *** 10pt E E AV I WORD POWERED TR Click Save and Submit to ave and nubmit. Click Sauw All Answers to save all anners. acer Lave Save A Save and Subt Question 3 (1 point) Listen Which of the following is a sales-oriented organization? Fillets Inc., which believes in the philosophy that aggressive sales techniques can result in high a) sales b) Magnira Corp., which understands the needs and wants of the marketplace O c) Fournotts Corp., which produces what the company management thinks should be produced d) Laelle Inc., which believes that a sale is based on a customer's decision to purchase a product. Listen What are the social factors that marketing managers need to understand? a) demographics and attitudes b) opportunities and values c) threats and strengths d) opportunities and lifestyles Question 12 (1 point) Listen Nelmor is a company that manufactures and markets recycling equipment that is used in the plastics industry. Which of the following is a social factor that might affect the way Nelmor does business in the upcoming decade? The population is growing older. Today's shoppers are environmentalists. Income levels will rise in the next decade. More consumer products will be made with high-tech ceramics. Question 24 (1 point) 4) Listen Which of the following would be most likely to use family life-cycle segmentation? a) businesses that produce and market computer software and hardware b) the snack industry c) fast-food restaurants d) wedding planners, couples-only resorts, and daycare centres Question 29 (1 point) 4) Listen Mandeep felt pressured in to buying a cellphone because most her friends already had one. What would Mandeep be classified as? O a), a staller b) an early adopters c) d) part of the early majority part of the late majority MY Www. What statement best explains CRM? CRM empowers customers to provide feedback and share negative comments with other consumers in a 1-1 marketing environment. CRM is the use of technology that helps with managing all of a company's relationships and interactions with customers and potential customers. The goal is focused on customer acquisition. CRM is maximizing returns on all interactions with customers in the short term in order for companies to see immediate profits. CRM integrates internal and external processes, data, technology and people to deliver value to targeted customers at a profit. voice over ip (voip) is an umbrella term used for all forms of circuit switched voice? t/f question 4 suppose you have the following two mutually exclusive projects that you can carry out on the corner of 39th street and walnut street: build a daycare center or a health spa. suppose the day care center has the following cash flows: an immediate cash outlay of $5,000 followed by inflows of $2500 in each of the next 3 years and zero thereafter. suppose the health spa has the following cash flows: an immediate outlay of $5000 followed by inflows of nothing in year one, $1000 in year 2 and $7100 in year 3 and zero thereafter. if you base your investment decision on which investment has the highest npv, which do you choose when the discount rate is 15%? Radoski Corporation's bonds make an annual coupon interest payment of 7.35%. The bonds have a par value of $1,000, a current price of $1,130, and mature in 12 years. What is the yield to maturity on these bonds? Which type of accounting change should always be accounted for in current and future periods?a. Change in accounting principleb. Change in reporting entityc. Change in accounting estimated. Correction of an error