RT for 1 mole of the gas. ∵4g of H2 gas has 2 moles of H2 ∴ It has 2 times KE as compared to 1 mole of gas But 8g of O2 gas has 1∕4 moles of O2; ∴ It has one fourth part of the KE as compared to 1 mole of gas. Hence, ratio of KE of H2 and O2 KEH2:KEO2=2: