# gas laws and state of matter, chemistry homework help

11 a 3.00 L flexible container holds a sample of hydrogen gas at 153kPa if the pressure increases to 203kPa and the temperature remains constant what will the volume be?

4.50L

0.22L

0.44L

2.26L

12

12 a 3.0L container holds a sample of hydrogen gas at 300K if the temperature decreases to 100K and the pressure remains constant what will the volume be?

1.0L

0.1L

9.0L

0.3L

13 you compare the gas generated from a reaction using 2 antacid tablets with the gas generated from a reaction using 4 antacid tablets (consider the antacid to be the limiting reagent) at constant pressure and temperature how do the volumes of the gases compare?

the gas generated by 4 antacid tablets has a greater volume

the 2 reactions produce the same amount of gas

the gas generated by 2 antacid tablets has a greater volume

14 a 1.0 L container holds a sample of hydrogen gas a 300 K and 101.5kPa if the pressure increases to 508k Pa and the volume remains constant what will the temperature be?

901K

103K

1,501K

605K

15 which of the following is the mathematical representation of Charles law?

V1l T1=V2l T2

P1V1=V2l T2

P1l T1= P2l T2

P1V1=P2 V2

the following question was on a quiz you fill a tank with gas at 60C to 100kPa and seal it you decrease the tempersture to 10 C but keep the volume constant what happens to the pressure? a student answers that the new pressure will be 17kPa which of the following explanations is true?

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

the student did not solve for the correct parameter and the answer should be 600kPa

the student did not solve for the correct parameter and the answer should be 50kPa

the student did not work with aboulute temperature and the answer should be 888kPa

17 a balloon contains 2.0L of air at 101.5kPa you squeeze the balloon to a volume of 0.5 l what is the pressure of the air inside the balloon?

101kPa

406kPa

812kPa

13kPa

18 you place a balloon in a closed chamber at STP when the balloon doubles in size what happens to the chamber pressure?

the pressure doubles

the pressure stays the same

the pressure increases to 4 times the orginal pressure

the pressure is reduced by one half

19 in a problem you are given 2 pressures and one temperature at constant volume and amount of gas you are asked to find a second temperature what law should you use?

Boyles law

Gay Lussacs law

charles’s law

avogadro’s law

20 sensors detect the concentration of mercaptan molecules in natural gas at various distances from a leaking source. at which location will a sensor detect the highest concentration of mercaptan

one meter in front of the source

one meter behind the source

one half meter in front of the source

two meters behind the source