7. Gases
The Ideal Gas Law
Problem 107a
Textbook Question
Textbook QuestionOlympic cyclists fill their tires with helium to make them lighter. Calculate the mass of air in an air-filled tire and the mass of helium in a helium-filled tire. Assume that the volume of the tire is 855 mL, that it is filled to a total pressure of 125 psi, and that the temperature is 25 °C. Also, assume an average molar mass for air of 28.8 g>mol. Calculate the mass of helium in a helium-filled tire.
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