Unit 10: Gases. Chemistry I Mr. Patel SWHS. Topic Outline. MUST have a scientific calculator (not graphing)!! Properties of Gases (13.1, 14.1) Kinetic Molecular Theory (13.1) Temperature and Pressure Conversions (14.1) Empirical Gas Laws (14.2) Ideal Gases and Real Gases (14.3)
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K = 273 + ⁰C
⁰C = K - 273
Ex: The hottest planet in the solar system measured a temperature of 480 K on a certain day. What is this temperature in Celsius?
Ex: The Rhinovirus reproduces especially well at nostril temperatures of 32.8⁰C. What is this temperature in Kelvin?
Ex: The air pressure for a certain tire is 109 kPa. What is this pressure in atmospheres?
Ex: The weather news gives the atmospheric pressure as 1.07 atm. What is this atmospheric pressure in mm Hg?
Ex: If the volume of the lungs is 2.400 L during exhalation and the pressure is 101.70 KPa, and the pressure during inhalation is 101.01 KPa, what is the volume of the lungs during inhalation?
Ex: If the volume of a gas at 25⁰C is 25.5 L, what is the temperature when the volume is 75.0 L?
Ex: If the pressure of a gas at 75⁰C is 12.5atm, what is the temperature in Celsius when the pressure is 3.75 atm?
Ex: If 3.75 moles of N2gas are used to inflate a balloon to 0.250L, what is the volume when the moles of gas are tripled?
Ex: The gas in a spray can has a pressure of 103 kPa at 25 ⁰C. The can is heated to 928 ⁰C. What is the resulting pressure?
Ex: A balloon has a volume of 30.0L at 313K and a pressure of 1147.9 mmHg. What is the volume at STP?
R = 0.0821
Ex: A 5.78L container with a pressure of 1285 torr holds 7.50 moles of an ideal gas. What is the temperature (in Celsius) within the container?
Ex: A container with a volume of 3.25L holds 32.0 g H2O gas at 25.0⁰C. What is the pressure within the container?
PTotal = P1 + P2 + P3 + …
Ex: A gas mixture containing carbon dioxide, oxygen, and nitrogen has a total pressure of 32.9 kPa. If the pressure due to O2 is 6.6 kPaand N2 is 23.0 kPa, what is the partial pressure of CO2?
Ex: In a mixture of gases at the same temperature, at what rate do O2 molecules effuse if Br2 molecules are effusing at a rate of 12.5 m/s?
Ex: In a container, 2 mol of Ar gas is at a pressure of 760 torr and at 0⁰C. What volume does it occupy?
Ex: The temperature of a gas is 300.K and the volume is 821 L. The temperature of the gas is raised by 35.0 K. What is the new volume?
Ex: The volume of a sealed, rigid cylinder is 20.0L. The pressure in the cylinder is 985 torr at 31 ⁰C. What is the effect when the temperature is lowered to 3.1 ⁰C?
Ex: An isothermal system contains 125g CO2gas at 900 K with a pressure of 5.31 kPa. What is the volume of the gas?
Ex: At a pressure of 1.00 atm, one mole of a gas is at 0⁰C. What volume does it occupy?
Ex: A container with a volume of 3000. mL holds 32.0 g CH4 gas at 25.0⁰C. What is the pressure within the container?
Ex: In a 3.05L bottle, CO2 gas is heated to 298K at a pressure of 225.1 kPa. How many grams of carbon dioxide gas are in the bottle?