Q7. A gas mixture that has the following composition in percent by volume: 10.2% CO2,

21.0% CO, 18.5% H2, 2.3% CH4 and 48.0% N2.

(a) What is the density of this gas at 24 °C and 755 mmHg, in grams per liter?

(b) What is the partial pressure of CO in this mixture at STP?

(c) What volume of air is required for the complete combustion of this mixture of gas? (Air

contains 21% O2 by volume)