Directions: Solve the following problems by using the first 3 Basic Gas Laws (Boyle’s, Charles’s, and Gay-Lussac’s). Show all of your work, as seen in the example below. Box your answers!
Example: A tire is at 157.8 kPa and 35C. If the pressure is increased to 50.78 psi, what will the new temperature of the tire be?
1.Decide which gas law to use, based on the information given. Write it down in its original form.
2.Write out all the starting information, in a column.
3.Convert all Celsius temperatures to Kelvin, by adding 273.
4.Match up units of each variable, if necessary, by converting one unit to another. This may or may not be necessary.
5.Rearrange your original equation to solve for the one variable you do not have information for.
6.Plug in your information into the rearranged equation, canceling all units except for the one you need in your answer.
7.Calculate and box your answer, with the appropriate unit.
Use these BASIC GAS LAWS to solve the following equations:
1.If a sample of a gas has a volume of 5.00 L @ 92.3C, what will the volume of the gas be if the temperature is lowered to -37C?V1 = ______
T1 = ______C ______K
V2 = ______
T2 = ______C ______K / 2.A sample of helium was compressed from a volume of 216.5 mL to a volume of 10.24 mL where the pressure was found to be 6400 mmHg. What was the original pressure of the helium?
P1 = ______
V1 = ______
P2 = ______
V2 = ______
3.The gas left in a used aerosol can is at a pressure of 18.42 psi at 18C. If the can is thrown into a fire, what will the pressure be inside the can @ 736C?
P1 = ______
T1 = ______C ______K
P2 = ______
T2 = ______C ______K / 4.A balloon contains 1600 mL of helium gas @ 84.2 psi. What is the volume when the balloon rises to an altitude where the pressure is only 327.5 kPa?
P1 = ______
V1 = ______
P2 = ______
V2 = ______
5.A sample of neon occupied a volume of 15.0 L at a temp of 30.0C. If the temp were to increase by 15C, what would be the volume of the neon under this new condition?
V1 = ______
T1 = ______C ______K
V2 = ______
T2 = ______C ______K / 6.A tire has a pressure of 345 kPa after is had been heated from 24C to 39 C. What was its original pressure?
P1 = ______
T1 = ______C ______K
P2 = ______
T2 = ______C ______K
7.Using 5.96 L N2 as the initial volume, calculate the volume that would result if the pressure of a gas was raised from 100 kPa to 150kPa.
P1 = ______
V1 = ______
P2 = ______
V2 = ______/ 8.A tire has a volume of 2.4 L after it had been cooled from 37C to STP. What was its original volume?
V1 = ______
T1 = ______C ______K
V2 = ______
T2 = ______C ______K
9.A 16.7 L air sample is at a temp of -50C. What will be the new volume if the temp is raised to 100C?
V1 = ______
T1 = ______C ______K
V2 = ______
T2 = ______C ______K / 10.An air sample at a temp of -40C has a pressure of 1.47 atm. What will be the new pressure if the temp is raised to 140C?
P1 = ______
T1 = ______C ______K
P2 = ______
T2 = ______C ______K
11.If a gas is cooled from 323.0 K to 273.0 K and the volume is kept constant, what final pressure would result if the original pressure was 790.0 mmHg?
P1 = ______
T1 = ______C ______K
P2 = ______
T2 = ______C ______K / 12.If a sample of a gas has a volume of 3.80 L @ 2.7C, what will the volume of the gas be if the temperature is lowered to -27.5C?
V1 = ______
T1 = ______C ______K
V2 = ______
T2 = ______C ______K