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  1. Problem #10: When the volume of a gas is changed from ___ mL to 852 mL, the temperature will change from 315 °C to 452 °C. What is the starting volume? Solution: Write Charles Law and substitute values in: V 1 / T 1 = V 2 / T 2. x / 588 K = 852 mL / 725 K (x) (725 K) = (852 mL) (588 K) x = 691 mL

    • Charles

      Bonus Example: An ideal gas at 7.00 °C is in a spherical...

  2. Calculate the temperature and pressure conditions needed to fit 2.00 moles of a gas into a volume of 22.414 L. Solution: 1) Notice that the problem asks for two conditions: one of temperature and one of pressure.

  3. Problem #15: 400.0 mL of a gas are under a pressure of 800.0 torr. What would the volume of the gas be at a pressure of 1000.0 torr? (800.0 torr) (400.0 mL) = (1000.0 torr) (x) Bonus Example #1: A particular balloon is designed by its manufacturer to be inflated to a volume of no more than 2.5 liters.

  4. The following practice problems are to master to topics on the ideal gas laws: Boyle’s law, Charles’s law, and Avogadro’s Law, as well as the combined gas law equation. There are examples to work on the Dalton law of partial pressures, the Graham’s law of effusion, and gas stoichiometry.

  5. Volume to Volume Problems 1) Balance each combustion reaction equation and use volume ratios to determine the volume of oxygen needed to react with each fuel.

  6. Find the volume the gas will occupy at -39.9 °C if the pressure remains constant. A sample of gas has a volume of 215 cm3 at 23.5 °C and 84.6 kPa. What volume will the gas occupy at STP? At a certain temperature, molecules of methane gas, CH4 have an average velocity of 0.098 m/s.

  7. A sample of gas has an initial volume of 25 L and an initial pressure of 3.5 atm. If the pressure changes to 1.3 atm, find the new volume, assuming that the temperature remains constant.