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CHEM 101 Final Exam Real Exam Questions and Answers (Verified Answers) Already Graded A+
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CHEM 101 Final Exam Real Exam Questions and Answers (Verified Answers) Already Graded A+ Which one of the following best describes Charles's Law? A) The volume of a gas is directly proportional to the temperature of the gas. B) The pressure of a gas is directly proportional to the temperature of...

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  • September 17, 2024
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  • 2024/2025
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  • chem 101 final exam real exam questions and answer

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CHEM 101 Final Exam Real Exam
Questions and Answers (Verified
Answers) Already Graded A+

Which one of the following best describes Charles's Law?
A) The volume of a gas is directly proportional to the temperature of the gas.
B) The pressure of a gas is directly proportional to the temperature of the gas.
C) The volume of a gas is directly proportional to the moles of a gas.
D) The pressure of a gas is inversely proportional to the volume of a gas. - Answer ✅
A) The volume of a gas us directly proportional to the temperature of the gas.

A weather balloon calibrated at 0.00 degrees C to have a volume of 20.0 L has what
volume at -40.0 degrees C assuming pressure is held constant? - Answer ✅ 17.1 L

You have a two-liter sample of each of the following gases, at all 25 degrees C and one
atmosphere pressure. Which sample will weigh the most?
A) Ammonia
B) Argon
C) Carbon dioxide
D) Nitrogen dioxide
E) Oxygen - Answer ✅ D) Nitrogen dioxide

A mixture of two gases with a total pressure of 2.00 atm contains 0.70 atm of Gas A.
What is the partial pressure of Gas B? - Answer ✅ 1.30 atm

What is the molar mass of an unknown gas with a density of 2.00 g/L at 1.00 atm and
25.0 degrees C? - Answer ✅ 48.9 g/mol

How many grams of sodium are required to completely react with 19.2 L of Cl2 gas at
STP according to the following chemical reaction? Remember 1 mol of an ideal gas has
a volume of 22.4 L at STP
2 Na (s) + Cl2(g) > 2 Na Cl(s) - Answer ✅ 39.4 g Na

What is the difference between effusion and diffusion? - Answer ✅ Effusion is through a
pinhole, and diffusion is through open space.

An exothermic reaction causes the surroundings to - Answer ✅ Warm up

Which one of the following processes is endothermic? - Answer ✅ Boiling a liquid

, Which one of the following processes is exothermic? - Answer ✅ Condensation of a
gas into a liquid

Work is best described as - Answer ✅ The displacement of an object against a force

How many calories are in 5401 J? (1 cal = 4.18 J) - Answer ✅ 1290 cal

How many Joules are there in 2001 calories? (1 cal = 4.18 J) - Answer ✅ 8377 J

In which one of the following processes is the system endothermic? - Answer ✅ A
process taking place in solution where the solution temperature decreases.

When molecules absorb heat, there is an increase in - Answer ✅ The kinetic energy of
the molecules

Which of the following has the greatest amount of potential energy? - Answer ✅ A ball
at the top of a hill

Which of the following represents an example of kinetic energy? - Answer ✅ A ball
rolling down a hill

Which one of the following processes is exothermic? - Answer ✅ Burning wood in a
campfire

Equal amounts of heat are added to equal masses of substances A and B at the same
temperature, but substance B gets hotter. What is true of their heat capacities (c)?
A) c(A) > c(B)
B) c(B) > c(A)
C) c(a) = c(B)
D) Not enough info - Answer ✅ A) c(A) > c(B)

An unknown solid is added to water in a calorimeter. The temperature of the water
increases. What does this say about the reaction? - Answer ✅ E) Both A and D are
correct

What is the identity of a 100. G sample of metal that, upon absorbing 4680 J of heat,
increases in temperature by 52.0 degrees C?
A) Mg
B) Al
C) Ti
D) Fe - Answer ✅ B) Al

An 80.0 g sample of metal, initially at 96.0 degree C, is placed into 150. G of water
initially at 26.0 degree C in a calorimeter. The finial temperature of the water is 28.1

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