A container of volume 0.1 m3 contains air at a temperature of 27 °C and a pressure of 1.5 MPa.
a. Calculate the number of moles of air molecules present.
b. If the molar mass of air is 29 gmole−1 , calculate the mass of the air in the container.
c. If 20% of the air is made up of oxygen molecules ( O2 ), calculate how many oxygen atoms are present in the container.