Question

A welder using a tank of volume 7.10×10⁻² m³ fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.25×10⁵ Pa and temperature of 39.0 ∘C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is 23.5 ∘C, the gauge pressure of the oxygen in the tank is 1.65×10⁵ Pa.

A) Find the initial mass of oxygen.

B) Find the mass of oxygen that has leaked out.

Answer 1