In 2.00 min, 28.8 mL of He effuse through a small hole. Under the same conditions of pressure and temperature, 9.62 mL of a mixture of CO and CO₂ effuse through the hole in the same amount of time. Calculate the percent composition by volume of the mixture. The effusion rate of a gas is proportional to its root-mean-square speed, which is related to its molar mass.

% CO

% CO₂

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Nelly StrackeLv2

31 Dec 2019

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