Question

1. A sample of an unknown gas is found to have a density of 1.63 g/L at a pressure of 0.647 atm and a temperature of 44 °C. Assume ideal behavior. The molar mass of the unknown gas is ___g/mol.

2. What volume of oxygen gas is required to react completely with 2.34 mol of nitrogen gas according to the following reaction at 0°C and 1 atm?
nitrogen (g) + oxygen(g)nitrogen monoxide (g)
___liters oxygen gas

Answer 1

1)

$$M = \frac{\rho RT}{P}$$

Where, p - density, T - temperature, P - pressure.

$$M = 65.5 g/mol$$

2)

$$V= \frac{nRT}{P}$$

Where n - mol, T - temperature, P - pressure

$$V = 0.052 m^3$$