The heat capacity, c p , of liquid carbon disulfide is a relatively constant 78 j / ( mol ⋅ k ) . however, the heat capacity of solid carbon disulfide varies greatly with temperature. from 99 k to its melting point at 161 k , the heat capacity of solid carbon disulfide increases linearly from 44 j/ ( mol. k ) to 57 j / ( mol. k ). the enthalpy of fusion of carbon disulfide is δhfus = 4390 j/mol . the absolute entropy of liquid carbon disulfide at 298 k is s = 151 j / ( mol. k). estimate the absolute entropy of carbon disulfide at 99k .