Start typing, then use the up and down aroows to select an option from the list.
A gas mixture with a total pressure of 745 mmHg contains each
of the following gases at the indicated partial pressures: CO2,
125 mmHg; Ar, 214 mmHg; and O2, 187 mmHg. The mixture
also contains helium gas. What is the partial pressure of the helium
gas? What mass of helium gas is present in a 12.0-L sample of this mixture at 273 K?