Answers
We can use the formula M₁V₁ = M₂V₂ the total volume of water that will yield 0.800 M HCl. We can then subtract that from the initial volume to get how much water needs to be added.
Since M₁V₁ = M₂V₂ (starting mole× starting volume = end mole × end volume)
⇒ (5 mol)(20 mL) = (0.80 mol) V₂
100 mol/mL = 0.8 mol × V₂
⇒ V₂ = 100 mol/mL ÷ 0.8 mol
= 125 m
Since we began with 20.0 mL of water,
water needed to add = 125 mL - 20 mL = 105 mL
Related Questions
I need a catchphrase for the element Boron as a superhero describing its traits!
Answers
what type of mixture is formed when black iron filings and yellow sulfur powder black iron filing is formed
Homogeneous
Heterogeneous
Compound
Answers
Answer:
when you heat the blend, you form iron sulfide, a compound
Depending on the ratio, you could form Fe4S3 or fool's gold
Explanation:When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S. Therefore, heating of mixture of iron and sulphur powder is a chemical change forming a compoundf
Ammonium sulphate + __________________ potassium sulfate + ammonia + water
Please fill in the blank.
Answers
Answer:
Potassium Hydroxide Solution =
or
Potassium Hydroxide =
Since we know the products and one of the reactions, we can work backward to discover what the other reactant may be.
As it is in the question, we can map the reactants and product:
Reactants Product
Ammonium Ammonia
Sulfate Sulfate
________ Potassium
________ Water
Since the reaction will yield Potassium and water, the likely reactant is Potassium Hydroxide (KOH). This is because we know that Ammonium lost a Hydrogen atom that could combine with the Hydroxide radical to form water.
This becomes clear when we consider the net ionic equation:
Ammonium sulphate + Potassium Hydroxide → potassium sulfate + ammonia + water
if we write this a balanced chemical equation:
(NH₄)₂SO₄ + 2KOH → K₂SO₄ + 2NH₃ + 2H₂O
if we write the reaction as an ionic equation
2NH₄⁺ + SO₄⁻ + 2K⁺ + 2OH⁻ → 2K⁺ + SO₄⁻ + 2NH₃ + 2H₂O
if we remove the ions that appear on both the reactant and product side (spectator ions)
2NH₄⁺ + 2OH⁻ → + 2NH₃ + 2H₂Owhat is a substance called if it speeds up a chemical reaction?
Answers
Answer:
A catalyst
Catalysts speed up the rate of reaction without being changed or used up in the reaction.
Hope this helps!
What will be the new pressure of a gas at 36.0 atm and 108 C if the temperature of the gas is increased to 441 C?
Answers
Answer
199 ATM
EXPLANATION
assume that the volume is constant. At higher temp the gas molecules move faster and the pressure goes up.
P=kT
CONVERT C TEMP TO K TEMP FOR GAS PROBLEMS!!!!!!
108C = 108 +273 = 381 K
441C = 441 + 273 = 714K
P=kT
108 =k x 381
K=108/381 = 0.279
AT THE HIGHER TEMP
P =0.279 X 714 =199ATM
A field of many different species of wildflowers would be considered a(n) _____________.
a
organism
b
population
c
community
d
ecosystem
e
biome
f
biosphere
Answers
Answer:
That would be a community.
Explanation:
A field of many different species of wildflowers is considered to be a community.
What is community in biological terms?It is called biological community meaning an interacting group of various species sharing a common location.Factors which determine overall structure of community are number of species, abundance of each species,interaction among the species and community's ability to return to normal after a natural calamity.
Change of communities over a period of time is called as ecological succession.Each species in a community has its own characteristic niche . The niche includes all the interactions of the species with other members of the community.An ecosystem comprises of biological community together with its physical environment.
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Which one please help
Answers
Answer:
density is mass more mass more density and same as volume
if you answer this question right you get 100 points. What is my favorite color it is a 4 letter word and it ends with e
° °
∵ω∵
Answers
Answer:
Blue!!
I think it is blue!
is it blue cuz i think its blue
Someone pls help me I will make you brain
Answers
ANSWER : I AND III
HOPE IT HELPED
I will make you brainless answer this 1 question pleaaeeee!b
Answers
hello
Describe the structure of solid potassium iodide.
Answers
Answer:
Potassium iodide is a metal-halide salt that has an ionic connection between the potassium cation (K+) and the iodide anion (I–). It is colorless to white and appears as cubical crystals, powder, or white granules. It has a salty, astringent flavor. This chemical is made from iodine and potassium hydroxide.
Which of the following sequences of elements would all have four valence electrons?
A.) B, Si, As, Te
B.) C, Si, Ge, Sn
C.) O, S, Se, Te
D.) Ga, Ge, As, Se
Answers
Answer:
Your answer should be B.) C, Si, Ge, Sn! I hope this helps you! :)
Suppose you identify a new element, Pivotium. Pivotium has two isotopes: Pivotium-426 and Pivotium-417. In the mixture, 11% of the mixture is Pivotium-426; the rest of the mixture is Pivotium-417. What is the relative atomic mass for Pivotium?
Answers
Answer:
Explanation:
Suppose you identify a new element, Pivotium. Pivotium has two isotopes: Pivotium-426 and Pivotium-417. In the mixture, 11% of the mixture is Pivotium-426; the rest of the mixture is Pivotium-417. What is the relative atomic mass for Pivotium?
Multiply the mass by the % written as a decimal and add the result.
426X0,11 + 417X 0.89 = 417.99 or 418
check 90% is. 417 only 10% 426
417X.9 +(426X0.10)=417.9
Convert 1.00 us gallon in kilometer (kL)
Answers
Someone pls help me I will make you you brain
Answers
Answer:
i have no clue
Explanation:
umm cause i have no clue sorry lol but good luck
pls help!!! A kitten has a mass of 1582 g and accelerates at 1.7 m/s^2. What is the net force acting upon the kitten?
Write down all the givens from the problem.
Are all of the units in the form required to use the generic equation? If not, then show your conversion.
Write the generic equation (equation with variables only) for this problem. Do not add any spaces between letters or symbols.
Substitute your numbers into the generic equation. This is where you show your math work, step by step. Solve the problem
Enter the numeric portion (numbers only) of your answer here rounded to the nearest tenth.
Enter the numeric portion (numbers only) of your answer here rounded to the nearest tenth.
Answers
Answer:
2689.4
Explanation:
how does decreasing the temperature affect the volume of gas??
Answers
Answer: Well, when you decrease the temperature in a gas the volume will decrease as well as the pressure. Since, heating a gas or liquid increases the temperature/pressure. Therefore, it'd increase the volume but since the temperature is decreasing the volume of the gas does too.
What is the frequency of red light with a wavelength of 645 nm?
Answers
Answer:
4.64E14
Explanation:
First convert 645 nm to m = 6.4500E-7m. The equation for finding v with these values is the speed of light/wavelength. so 2.998E8/6.4500E-7m.
so your v or frequency would equal 4.64E14
Fun fact you know this is visible light because the visible light range is within the E14 range.
Block A is made of copper, which has a specific heat value of 0.385 J/g*C.
Block B is made of aluminum, which has a specific heat value of 0.900
J/g*C. Both blocks have a mass of 100 grams. If you are trying to heat the
blocks to a temperature of 200 C, which block will need to absorb more
energy?
o Block A (copper) because it has a lower specific heat value.
o Block B (aluminum) because it has a higher specific heat value.
o Block A (copper) because it has a higher specific heat value.
o Block B (aluminum) because it has a lower specific heat value.
Answers
Block B will need to absorb more energy as it has higher specific heat value.
What is specific heat?Specific heat is defined as the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius rise. Units of specific heat are calories or joules per gram per degree Celsius.
Specific heat capacity varies with temperature often and is different for each state of matter. While the substance which undergoes phase transition then it's specific heat is technically infinite.
Specific heat of a gas is significantly higher when it is allowed to expand as it is heated .It may also be referred to as a ratio between the specific heat capacities of two substances at a given temperature.It is calculated by the formula ,Q=mcT
For copper, it is 100×0.385×473=18210.5 J
For aluminium ,it is 100×0.90×473=42570 J
As the specific heat of aluminium is higher it will absorb more energy.
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hello how to draw the electron dot structure of H2S and F2?
Answers
Explanation:
1. Attachment
Electron dot structure of H2S (hydrogen sulfide)
2. Attachment
Electron dot structure of F2 (Fluorine).
What is the law of conservation of mass and how does it relate to chemical equations?
What does it mean for a
chemical equation to be balanced?
Answers
Answer: Matter cannot be created or destroyed in chemical reactions.
Explanation: This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.
Which two conversion factors would be used to convert the quantity of 4500 seconds into hours.
Answers
Answer:
the answer is A
Explanation:
in 60 seconds there is 1 minute and in 60 minutes there is one hour
what is the empirical formula of a compound that contains only iron and oxygen and is 22.27% oxygen?
Answers
Answer:
A) FeO
Explanation:
Options:
A) FeO
B) FeO2
C) Fe2O
D) Fe7O2
The correct answer is A) FeO.
(Hope this helps can I pls have brainlist (crown)☺️)
The empirical formula of a compound that contains only iron and oxygen and is 22.27% oxygen is FeO. The correct option is A.
What is the empirical formula?The simplest whole number ratio of atoms in a chemical molecule is its empirical formula. The empirical formula is the chemical formula that gives the number of atoms of the chemical formula that is given in the chemical reaction.
For example, the C₆H₁₂O₆ is the formula of glucose. The simplest formula is CH₂O. This will be the simplest ratio of this compound. The first one, this C₆H₁₂O₆ is the molecular formula.
It only contains the element one quantity. The empirical formula that contains oxygen and iron will be FeO. The empirical formulas is calculated by dividing the simplest formula.
Thus, the correct option is A) FeO.
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The question is incomplete. Your most probably complete question is given below:
A) FeO
B) FeO2
C) Fe2O
D) Fe7O2
4. Explain error and how it can impact your results from an experiment
Answers
Random errors will shift each measurement from its true value by a random amount and in a random direction. These will affect reliability (since they're random) but may not affect the overall accuracy of a result.
A sample of an unknown solid is found to have a volume of 24.3 cm3 and a mass of
217.0 grams. What is the density of the unknown
Answers
Explanation:
Density = mass ÷ volume
= 217.0 g ÷ 24.3 cm³
= 8.93 g/cm³
∴ the unknown sample of mass 217.0 grams and volume of 24.3 cm³ has a density of 8.93 g/cm³.
Write down the names, physical properties, and inertness of NOBLE GASES ( group no. 8)
Note:
*Please don't copy from anywhere
*50 POINTS!!!!!!!!
Answers
Answer:
There's No Answer Im Sorry
If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket” being changed by human activities?
It is getting thinner and keeping the Earth cooler.
It is getting thicker and keeping the Earth cooler.
It is getting thicker and keeping the Earth warmer.
It is getting thinner and keeping the Earth warmer.
Answers
Answer:
It is getting thicker and keeping the Earth warmer.
Answer:
it is getting thinner and keeping the earth warmer
Activity 32 can someone explain how u do this?.
Answers
Answer:
write a question and answer it with the words
Explanation:
Gloria/ the bank/ the car
A: where is Gloria going? To the bank, right?
B: Yes, she's going to the bank. She's going in a car.
Which is larger 1.45 or 1.2544 for density
Answers
Answer:
1.45 is larger for density
Balance the following equation:
C7H602 + 02 -- CO2 + H20
Answers
Answer:
Explanation:
2C7H6O2 + 15O2 → 14CO2 + 6H2O.