2. Pressure Conversions
a. Convert 0.650 atm to mm Hg.
b. Convert 710.0 torr to atm.
3. Temperature Conversions
a. Convert 30.0 Celsius to Kelvin
b. Convert 25 Celsius to Kelvin
4. Name 4 factors that affect the properties of gases
Solve the following using the gas equations. Temperature must always be converted to kelvin before using in any equation. In addition to Kelvin for the
5. Boyle’s Law - Temperature constant
a. A sample of gas has a volume of 400.0 mL when measured at 25oC and 760.0 torr.
What volume will it occupy at 25oC and 195.0 torr?
b. What final pressure must be applied to a sample of gas having a volume of
200.0 mL at 20.0 oC and 750.0 torr pressure to permit the expansion of the gas to a
volume of 600.0 mL at 20.0 oC?
6. Charles Law - Pressure constant
a. A gas occupies a volume of 100.0 mL at 27.0°C and 740.0 torr. What volume will the
gas have at 5.00oC and 740.0 torr?
b. A gas occupies a volume of 100. 0mL at 27.0oC and 630.0 torr. At what temperature
in oC would the volume be 80.0mL at 630.0 torr?
7. Ideal Gas Law - The value of the gas constant, R, is 0.08206 atm*Liters/mole*K
Given the following sets of values for an ideal gas, calculate the unknown
quantity: PRESSURE in Atmospheres, volume in Liters, n in moles, and Temperature in Kelvin
a. P = 785 mm Hg V = ? n = 0.216 mol T = 27.0oC
b. P = ? V=665 mL n = 0.0948 mol T = 30.0oC
c. At what temperature in oC does 0.398 moles of gas occupy a volume of 11.1
Liters at a pressure of 0.980 atm?
d. How many moles of CO2 gas occupy a volume of 757 mL at 10.4 atm and 317
Kelvin?
e. How many grams of CO2 gas are present?
8. Combined Gas Law - pressure, volume, temperature all changing.
a. A gas at 25.0C with an initial pressure of 0.500atm and volume of 200.0mL is heated to 35.0C with a final pressure 0.750atm. What is the final volume in Liters?
b. A gas at 25.0C with an initial pressure of 0.500atm and 200.0ml is heated to produce a final pressure of 0.850atm and final volume of 500.0ml. What is the final temperature in Celsius?
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