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Mixtures of helium and oxygen are used in scuba diving tanks to help prevent "the bends". For a particular dive, 35.0 L of He at 20.5 °C and 1.50 atm and 15.0 L of O2 at 20.5 °C and 1.50 atm were pumped into a tank with a volume of 7.50 L. What is the total pressure (in atm) in the tank at 20.5 °C?
a. 3.00 atm
b. 1.50 atm
c. 20.5 atm
d. 7.50 atm
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Answers: 3
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