What mass of helium gas is present in a 11.1-L sample of this mixture at 283 K ?
A gas mixture with a total pressure of 760 mmHg contains each of the following gases at the indicated partial pressures: 123 mmHg CO2, 221 mmHg Ar, and 179 mmHg O2. The mixture also contains helium gas.
Partial pressure of helium gas is 237 mmHg.
- Roger the MoleLv 72 months ago
(760 mmHg total) - (123 mmHg CO2) - (221 mmHg Ar) - (179 mmHg O2) =
237 mmHg He
n = PV / RT = (237 mmHg) x (11.1 L) / ((62.36367 L mmHg/K mol) x (283 K)) =
0.1491 mol He
(0.1491 mol He) x (4.0026 g He/mol) = 0.597 g He