Gas Laws Homework Ii

Name: _______________________________ Block: ______

Gas Laws II 1.

Complete the following table for an ideal gas. Feel free to you use the space below to work. Pressure (atm) Volume (L) n (mol) Temperature 5.00 2.00 155 °C 0.300 2.00 155 K 4.47 25.0 2.01 2.25 10.5 75 °C

2. Complete the following table for an ideal gas. Watch your units! Feel free to use the space below to work. Pressure 7.74 x 103 Pa 455 torr

Volume 12.2 mL 43.0 mL

n (mol) 0.421 mol 4.4 x 10-2 mol

Temperature 25 °C 223 K 331 °C

3. Calculate each of the following quantities for an ideal gas 1 | Page

a. The volume of the gas in liters, if 1.50 mol has a pressure of 0.985 atm at a temperature of -6 °C

b. The temperature of the gas at which 3.33 x 10-3 mol occupies 325 mL at 750 torr

c. The pressure, in atm, if 0.0467 mol occupies 413 mL at 138 °C

4. Calculate the number of molecules in a deep breath of air whose volume is 2.25 L at body temperature, 37 °C, and a pressure of 735 torr.

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5. A scuba diver’s tank contains 0.29 kg of O2 compressed into a volume of 2.3 L. a. Calculate the gas pressure inside the tank at 9 °C.

b. What volume would this oxygen occupy at 26 °C and 0.95 atm?

6. Three gases are mixed in a 1.00 L container. The partial pressure of CO2 is 250 torr, that of N2is 375 torr, and that of He is 137 torr. What is the pressure of the mixture of gases?

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7. The total pressure in a cylinder containing a mixture of two gases is 1.46 atm. If the partial pressure of one gas is 750 torr, what is the partial pressure of the other gas?

8. A sample of oxygen is collected in a bottle over water. The pressure inside the bottle is made equal to the barometric pressure, which is 752 torr. When collected over water, the gas is a mixture of oxygen and water vapor. The partial pressure of water (known as the vapor pressure) at that temperature is 24 torr. What is the pressure of the pure oxygen?

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