Table 5.1 Specific Heats of Some Common Substances Kilcalories Specific Heat (20.C) Substance kcal/kg. C /kg . c Air (O C, 1 atm) 0.24 1000 Alcohol (ethyl) 0.60 2510 Aluminum 0.22 920 Copper 0.092 385 2100 waterhas &Ice 0.50 different Iron 0.105 140 values Mercury 0.033 138 Steam (at 1 atm) 0.50 2100 Water (liquid) 1.00 4186 Wood (average) 0.40 1700 Table 5.2 Temperatures of Phase Changes and Latent Heats for Some Substances (normal atmospheric pressure) Latent Heat Latent Heat of of Fusion, Vaporization, Substance L, (kcal/kg) Melting Point Ly (kcal/kg) Boiling Point Alcohol, ethyl 25 -114C 204 78 . C Helium* 377 - 269 C Lead 5.9 328 C 207 1744 0 C Mercury 2.8 - 39 C 65 Nitrogen 357 . C 6.1 -210 C 48 Water - 196 C 80 O.C 540 *Not a solid at 1 atm pressure; melting point -272 C at 26 atm. 100 C