The specific heat of toluene is given by: Cp = 20.869 + 5.293×102T where Cp is in BTU/lbmol-R and Tis in R. Express the equation in cal, mol, and K.

If a food product is being frozen in a system capable of removing 6200 kJ of thermal energy per product, with the product having a specific heat of 4.1 kJ/kg°C  above the freezing temperature of -1.7°C , a latent heat of fusion of 284 kJ/kg, and the product has a specific heat of 2.2 kJ/kg°C below the freezing temperature. If 10.4 kg of product enters the system at 15°C, and exits it with a temperature of –21 °C, what percentage (to the nearest percent) of the full capability of the freezer has been used?

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calculate the heat required to raise the temperature of 1 mol of methane from 260 to 600 °c in steady flow process at a pressure sufficient low that methane may be considered an ideal gas