Question

Answer the question in this picture

Answer 1

Suppose that there is no chemical reaction taking place. So it is purely a physical mixture.

Moles of N2 = 56gm/28gm = 2 moles

Moles of CO2 = 44gm /44gm = 1 mole

Moles of CH4 : 16gm/16gm = 1 mole

Molar fraction of CH4 = 1/4

Partial pressure of Methane: 1/4 * 720 mm = 180 mm