ethanol boils at 78 oc and has a latent heat of vaporization of 51.94 . the heat required to raise an unknown mass of ethanol from 65oc to 95oc is 46.13 kj. determine the moles of ethanol. take the the liquid-state specific heat of ethanol to be 0.110 and the gas-state specific heat of ethanol to be 0.078 .