The temperature of a gas rose from 250k to 350k. at 350k, the volume of the gas was 3.0l. if the pressure did not change, what was the initial volume of the gas?

)in the deacon process for the manufacture of chlorine, hcl and o2 react to form cl2 and h2o. sufficient air (21 mole% o2, 79% n2) is fed to provide 35% excess oxygen, and the fractional conversion of hcl is 85%. calculate the mole fractions of the product stream components.