The mass of water vapour in a given volume of air is 0.05g at 20°C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air. by Sunday | Jan 4 | Physics WAEC | 0 comments A. 3.33% B. 5.55% C. 33.33% D. 55.55% Correct Answer: Option C C. 33.33% Users Also Read These:A given volume of methane diffuses in 20s. How long…A tap supplies water at 30°C while another supplies…The temperature at which the water vapour present in…The volume of an ideal gas at a pressure of 77cmHg…If the partial pressure of water vapour at 27°C is…