True or false: potential energy increases as like charges get closer to one another

Answer:

V = 172.28 mL

Explanation:

density is mass divided by volume

p = density

m = mass

V = volume

p = m/v

V = m/p

V = 392.8/2.28

V = 172.28 mL

Answer: The SI unit of force is the newton, symbol N.

Explanation:

Answer:

the SI unit of force is newton

Answer:

the Ans is H2O2

Explanation:

THANKS.............

Answer:

0.071 moles of Na₃PO₄ .

Explanation:

Given data:

Number of molecules of Na₃PO₄ = 4.3× 10²² molecules

Number of moles = ?

Solution:

1 mole contain 6.022 × 10²³ molecules

4.3× 10²² molecules × 1 mol / 6.022 × 10²³ molecules

0.71× 10⁻¹ mol

0.071 mol

The number 6.022 × 10²³ is called Avogadro number.

"It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance"

Answer:

A yan hehehehe

salamat puso ma ah

Answer:

Option 2, 3, and also 6 btw

Explanation:

The other guy was wrong

2265 g Fe₃O₄

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Balanced] Fe₃O₄ + 4H₂ → 3Fe + 4H₂O

[Given] 705.0 g H₂O

Step 2: Identify Conversions

[RxN] 4 mol H₂O → 1 mol Fe₃O₄

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Fe - 55.85 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

Molar Mass of Fe₃O₄ - 3(55.85) + 4(16.00) = 231.55 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 4 sig figs.

2264.74 g Fe₃O₄ ≈ 2265 g Fe₃O₄

Stock solutions contain a standardized concentration of the solute in a solution. To prepare 50 mL of solution with a ratio of 1:1000 solution, 5 gms of the drug will be required.

Dilution is the property of the solution with a less amount of solute concentration than the stock solution. A dilute solution is prepared by the addition of more solvent.

The addition of the solvent in a solution decreases the molar concentration which leads to dilution.

The ratio of 1:1000 means that 1 gm of the drug is present in 1000 mL (1L) of solution.

1000 mL = 1 gm × 500 mL × X gm

Here, the X represents the 0.5 gm of drug dissolved in 500 mL.

The amount of drug used is calculated as,

5 mL ÷ 50 ml = 0.5 g ÷ X g

X = 0.5 × 50 ÷ 5

= 5 gm

Therefore, 5 gm of the drug is required to prepare 50 mL of solution.

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Answer:

Explanation

Boron (B)

Silicon (Si)

Germanium (Ge)

Arsenic (As)

Antimony (Sb)

Tellurium (Te)

Polonium (Po

Answer:

New kinds of products forms and the reaction is not easily reversible.

Explanation:

The only way to be certain that a chemical change has occurred is by finding out if new kinds of products have been formed.

A chemical change is a change in which new kinds of matter is formed. It is always accompanied by energy changes.

The process is not easily reversible.

Examples of chemical changes are combustion, rusting of iron, precipitation and souring of milk.

Answer:

the effluent concentration of the CMFR is 150 mg/L

Explanation:

Given that;

flowrate of first water Q₁ = 1 m³/min

benzene concentration C₁ = 150 mg/L

flowrate of second water Q₂ = 0.5 m3/min

benzene concentration C₂ =  150 mg/L

To Calculate the effluent concentration of the CMFR, we use the expression;

[tex]C_{effluent}[/tex] = (Q₁C₁ + Q₂C₂) / Q₁ + Q₂

we substitute

[tex]C_{effluent}[/tex] = (1 × 150 + 0.5 × 150) / 1 + 0.5

[tex]C_{effluent}[/tex] = 225 / 1.5

[tex]C_{effluent}[/tex] = 150 mg/L

Therefore, the effluent concentration of the CMFR is 150 mg/L

Explanation:

We have 2CO + O2 => 2CO2.

Moles of CO = 28.6g / (28g/mol) = 1.021mol.

Moles of CO2 = Moles of CO = 1.021mol.

Answer:

D

Explanation:

The volume of carbon monoxide is produced when 1.20 L of dicyanoacetylene reacts is

Stoichiometry of any reaction tells about rhe relative amount of substance present before and after the completion of any chemical reaction.

Given balanced chemical reaction between dicyanoacetylene and ozone to produce carbon monoxide and nitrogen is:

3C₄N₂ + 4O₃ → 12CO + 3N₂

From the stoichiometry of the reaction it is clear that:
3 liters of C₄N₂ =  produces 12 liters of CO

1.20 liters of C₄N₂ =  produces 12/3×1.20=4.8 liters of CO

Hence option (d) is correct i.e. 4.8 liters.

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Answer:

RbF2 + Ca

Explanation:

Since Rb is located in IIA as well as Ca, Rb has ion form Rb2+

Hence CaF2 + Rb → RbF2 +Ca

Please be reminded, this answer may not be 100% correct

Answer: Coefficient 0

subscript for V 2

subscript for O 5

Explanation: yes

There is no coefficient in V₂O₅ and the subscript of vanadium V is 2 and the subscript of oxygen is 5.

Vanadium pentoxide is an ionic compound formed by donating electrons from the vanadium metal to oxygen.  The chemical formula of vanadium pentoxide is V₂O₅.

The chemical formula of a compound is written in terms of the chemical symbol of each constituent elements and the number of their atoms. The number of atoms is written as subscript for the chemical symbols.

In V₂O₅, there are are 2 vanadium atoms and 5 oxygen atoms. Coefficients are numbers prior to the formula in reaction. Here there is no coefficient and the subscript for V is 2 and that of O is 5.

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Answer:

Hello there!

I believe the answer you are looking for is A!

Explanation:

It makes sense to me more than the other answer choices.

have a nice day

Answer: The Eurasian Plate or both the Eurasian and Pacific Plate.

Explanation:

Answer:The atoms cool down and become slower and their bonds become close and they move less.

Explanation:I took science

Answer:C. They can be produced easily in areas with geothermal activity.

D. The land can be used for other purposes while supplying energy.

Explanation:

Both c and d are correct

It is easier to switch to solar and wind energy as compared to other alternative energy sources because they can be produced easily in areas with geothermal activity and can be used for other purposes while supplying energy.

Solar energy is any type of energy generated by the sun. Solar energy can be harnessed directly or indirectly for human use.

Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution.

Diversifying energy supply and reducing dependence on imported fuels. Creating economic development and jobs in manufacturing, installation, and more.

Hence, options C and D are correct.

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Answer:0.00061L He

Explanation:Avogadro constant, N = 6.02214076*10^23 per mole

at STP 1 mole = 22.71L

1.64*10^19 He = ( 1.64*10^19/N)*22.71 = 1.64*10^19*[3.77*10^-23] = 6.18*10^-4L

000610 L volume is occupied by 1.64 x 1019 atoms of Helium gas at STP. Therefore, option C is correct.

The nominal conditions in the atmosphere at sea level are referred to as standard temperature and pressure (STP). These are the conditions: 0 degrees Celsius and 1 atmosphere (atm).

It is written as V = nRT/P. "P" stands for pressure, "V" stands for volume, n stands for the number of moles of a gas, "R" stands for the molar gas constant, and "T" stands for temperature.

The International Union of Pure and Applied Chemistry (IUPAC) utilized to define STP as 0 ᵒC (273.15 K, or 32 ᵒF) and 1 atm (101.325 kPa = 760 Torr) .

Avogadro constant, N = 6.023 × 10^23 per mole

At STP 1 mole = 22.71L

1.64 × 10^19 He = ( 1.64 × 10^19/N) × 22.71

= 1.64 × 10^19 × [3.77 × 10^-23]

= 6.18 × 10^-4L

= 000610 L He

Thus, option C is correct.

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Answer:

An object which experiences either a change in the magnitude or the direction of the velocity vector can be said to be accelerating. This explains why an object moving in a circle at constant speed can be said to accelerate - the direction of the velocity changes.

Explanation:

Answer:

An object which experiences either a change in the magnitude.

Explanation:

the direction of the velocity changes.

Hope that helps :)

Have a good day

Answer:

Technology, science and knowledge are important in modern contemporary society. The understanding of how social, cultural and material elements influence the production of new practices, new ways of understanding and new institutions is vital in our understanding of contemporary postmodern society.

Explanation:

1. impact of technological development on everyday life, 2. debates about the cultural significance of science and technology

Hope this helped! Brainlist?

Answer:

The importance of Science and Technology is so that if your tryin to prove your point with science you have to be educated on that in order to actually prove it. and for technology if we didn't have that we will not be able to know what is going on in society.

Explanation:

Answer:

0.86 g/mL

Explanation:

In order to solve the problem, you have to know the formula for "Density." Density refers to "mass per unit volume." It's formula is:

Next, we have to convert the units of measurement in accordance to what is being asked in the problem. It is asking for "g/mL," which means we have to convert 1.25 quarts (qt.) to mL and 2.25 pounds (lbs.) to grams.

Let's solve.

1.25 qt. x [tex]\frac{946.35 mL}{1 qt.}[/tex] = 1,182.94 mL

2.25 pounds x [tex]\frac{453.592 grams}{1 pound}[/tex] = 1,020.58 grams

Now that we converted them to their appropriate units of measurement, we can now solve for density.

The density of the motor oil is 0.86 g/mL

Answer:

I think the answer is A the Afracan plate

Explanation:

hope this helps:)

Answer:

1. The Lewis structure for SO32- is structure B.

Note: See attachment for complete question and for formal charges of the atoms in each structure.

Explanation:

The formal charge of an atom in a molecule is the assumed charge the atom would have if the electrons in the bonds were evenly distributed between the atoms.

Formal charge can be calculated as follows:

Formal charge = number of valence electrons - ( number of non-bonding electrons + ½ bonding electrons)

Formal charges are used to determine the best possible Lewis structure of a molecule or ion. The following rules are applied:

1. A structure in which all formal charges are zero is preferable to one in which some formal charges are not zero.

2. If non-zero formal charges must exist in the structure , the arrangement with the smallest non-zero formal charges is most preferred.

3. Lewis structures are preferable when adjacent formal charges are zero or of the opposite sign.

4. The structure with the negative formal charges on the more electronegative atoms is preferred among other structures of the molecule or ion.

From the above rules, structure B has negative charges on the more electronegative oxygen atoms and has more zero formal charges on the atoms. The central atom, sulfur also has a zero formal charge.

Answer:

cause of the sun rotation

Explanation:

Answer:

The world is tilting on an edge that creates seasons.

Explanation:

And that's why different parts of the have different climates.

Answer:

1. 7860 Feet = 1.488 miles

A= 1

B= 5280

2. 0.565 miles = 2983.2 feet

C= 0.565

D= 1

Explanation:

1. Convert 7860 feet to miles

1 miles= 5280 feet

1 Feet= 1/ 5280 miles

7860 Feet= 7860 ( 1/ 5280) miles

7860 Feet = 1.488 miles

A= 1

B= 5280

2. Convert 0.565 miles to feet

1 mile= 5280 feet

0.565 miles = 5280 feet * (0.565/1)

0.565 miles = 2983.2 feet

C= 0.565

D= 1

We see that when we have to convert feet into miles we divide the number by 5280 because feet are smaller than miles. Similarly when we have to convert miles into feet we multiply by the given number because miles are greater than feet.

The above method used is called the unitary method but we should always keep in mind that conversion from smaller to bigger units require divsion and from bigger to smaller units require multiplication.

Answer: CONDENSATION When steam is cooled, it releases thermal energy and turns into its liquid state. This process is called condensation. reversed if the liquid is cooled. The change from the liquid state to the solid state is called freezing