Question

#1: What is the mathematical representation of Charles's law?

A. P1V1 = V2/T2
B. P1V1 = P2V2
C. V1/T1 = V2/T2
D. P1/T1 = P2/T2

**my answer; C

is that right?

Answer 1

#2: The following question appears on a quiz: "You fill a tank with gas at 60°C to 100 kPa and seal it. You decrease the temperature to 10°C but keep the volume constant. What happens to the pressure?" The student answers that the new pressure will be 17 kPa. Which of the following explanations is true?

A. The student did not work with absolute temperatures, and the answer should be 85 kPa.

B. The student did not solve for the correct parameter, and the answer should be 600 kPa.

C. The student did not solve for the correct parameter, and the answer should be 50 kPa.

D. The student did not work with absolute temperatures, and the answer should be 888 kPa.

**my answer: A
is that right?

Answer 2

#3: A balloon contains 2.0 L of air at 101.5 kPa. You squeeze the balloon to a volume of 0.5 L. What is the pressure of air inside the balloon?

A. 13 kPa

B. 101 kPa

C. 406 kPa

D. 812 kPa

**my answer: C.

is that right?

Answer 3

#4: You place a balloon in a closed chamber at STP. You double the chamber pressure. What happens to the balloon?

A. It reduces to one-half the original volume.

B. It stays the same volume.

C. It doubles in volume.

D. It expands to four times the original volume.

**my answer: A.

is that right?

Answer 4

#5: In a problem, you are given two volumes and one pressure at a constant temperature and amount of gas. You are asked to find a second pressure. What law should you use?

A. Charles's law

B. Avogadro's law

C. Boyle's law

D. Gay-Lussac's law

**my answer: C. Boyle's law

is that correct? :)

Answer 5

All correct.

Answer 6

awesome!! thanks :)

Answer 7

awesome!! thanks :)