A cylinder contains a mixture of nitrogen and oxygen at a total pressure of

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

0.985\,\text{atm}

. The partial pressure of

\mathrm{O_2}

is measured to be

0.210\,\text{atm}

. Calculate the percent composition by volume of

\mathrm{O_2}

in the mixture (to three significant figures).