pls include the final values and the steps in calculating them :) I'll give a like if it is correct

1. Air is contained in a 30m3 container at 400K and 1.013105 Pa. Determine the following properties of the gas mixture: a. mole fraction of O2 b. volume fraction of O2 c. weight of the mixture d. mass density of O2 e. mass density of N2 f. mass density of the air h. average molecular weight of the gas mixture