Unit Test — Unit test Answers

0 verified answers
21
Free Preview

The gas in the piston is being heated, and the piston has moved upward. The observation will be summarized in a row of the incomplete table below.RowNameObservationVariables1Boyle's law Volume increases when pressure decreases?2Charles’s law??3Gay-Lussac’s law?Temperature, pressure4Combined gas law??What are the variables for this piston?

Question illustration
A
temperature only
B
temperature and volume
C
pressure and number of molecules
D
volume and number of molecules
22
Free Preview

A gas has experienced a small increase in volume but has maintained the same pressure and number of moles. According to the ideal gas law, how has the temperature of the gas changed?

A
It has increased two times.
B
It has increased slightly.
C
It has decreased slightly.
D
It has stayed the same.
23

Which two conditions can limit the usefulness of the kinetic-molecular theory in describing gas behavior?

A
high pressure and low temperatures
B
high pressure and medium temperatures
C
low pressure and low temperatures
D
low pressure and medium temperatures
24

The incomplete table below shows selected characteristics of gas laws.NameVariablesConstantsEquation? ??Charles’s law???temperature, pressure?Combined gas lawpressure, temperature, volume??Which constants would most likely be filled in the first row of the table?

Question illustration
A
temperature and moles of gas
B
volume and temperature
C
pressure and volume
D
pressure and moles of gas
25

Which sequence describes the result of increasing the number of gas particles in a container?

A
fewer collisions ® lower collision force ® lower pressure
B
more collisions ® lower collision force ® lower pressure
C
fewer collisions ® greater collision force ® higher pressure
D
more collisions ® greater collision force ® higher pressure

Did you find these answers helpful?

Unit Test — Unit test Answers — TX-Chemistry…