Atank contains 21 kg of dry air and 0.3 kg of water vapor at 30°c and 100 kpa total pressure. determine (a) the specific humidity(b) the relative humidity (c) the specific enthalpy of the mixture in the tank as (kj/kg-mixture) (calculate by hand)(d) the specific enthalpy of the mixture in the tank as (kj/kg-dry air) (calculate by hand)(e) explain (in 1-2 sentences) the difference between the values in c and d – which value agrees with the enthalpy value in the psychrometric chart at this condition?