Charles' Law relates the change in which 2 variables?
Volume (V) and Temperature (T)
100
The Combined Gas Law relates the changes from initial state to final state of which variables?
Pressure (P), Volume (V), and Temperature (T)
100
What is the equation for the ideal gas law?
PV=nRT
200
Someone sprays perfume at the back of the room and we smell it a few minutes later in the front of the room. What explains this process?
Diffusion
200
What is the equation when you compare final and initial coniditions?
P1V1 = P2V2
200
As temperature increases, volume (...............). Temperature and volume are (...............) related.
1. increases
2. directly
200
What is the equation for the Combined Gas Law?
P1V1/T1 = P2V2/T2
200
What is R? (Please include units)
0.0821 L∙atm/K∙mole
300
If I have 45L of helium in a balloon at 25⁰C and increase the temperature of the balloon to 55⁰C at constant pressure, what will the new volume of the balloon be? And which law would you use?
50.L
Charles’ Law
300
As pressure increases, volume (...............). Pressure and volume are (...............) related.
1. decreases
2. inversely
300
What is the equation for Charles' Law when you compare initial and final conditions?
V1/T1 = V2/T2
300
How would you rearrange the equation to solve for T2?
T2 = P2V2T1/P1V1
300
If I have a 52L container that holds 45 moles of gas at a temperature of 210K, what is the pressure inside the container?
15atm
400
A balloon contains 0.45 moles of nitrogen gas at STP. What is the volume of the balloon? Which law would you use?
10.L
Ideal gas law
400
A volume of air occupying 3.00L at 0.765atm is compressed to a pressure of 1.43atm. The temperature remains constant. What is the new volume?
1.60L
400
A volume of gas occupies 1.4L at 35⁰C. What would be the new volume if it is heated to 95⁰C at constant pressure?
1.7L
400
A gas occupies a volume of 3.08L at STP. If the pressure is decreased to 0.5atm and the temperature is increased to 350.K, what will be the new volume?
8L
400
The steel bomb of a bomb calorimeter, which has a volume of 75.0mL contains oxygen at a pressure of 145atm and a temperature at 295K. How many moles of oxygen are there?
2.23moles Oxygen gas
500
Would neon gas or oxygen gas effuse faster? Why?
Neon gas (20.18 amu), because it has a lower molecular mass than oxygen (32.00 amu).
500
A given amount of gas occupies a volume of 2.20L at 0.45atm. It is expanded at constant temperature to a volume of 4.38L. What is the new pressure?
0.23atm
500
A volume of gas occupies 3.3L at STP. What temperature must it cool to if the volume is decreased to 1.2L at constant pressure?
99K
500
A sample of gas has a volume of 283 mL at 25°C and 0.500atm. What is the pressure at 120°C and 1.3L?
0.14atm
500
I have a balloon that can hold 100L of a gas. If I inflate this balloon with 3 moles of nitrogen gas at a pressure of 1.5atm, what is the temperature of the balloon?