posted by Garcia on .
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 3.60 MJ of energy (in the form of heat) if the temperature of the sodium is not to increased by more than 10.0 °C? Use CP = 30.8 J/(K·mol) for Na(l) at 500 K.
3.6E6 = mols Na x specific heat Na x 10
Solve for mols Na and convert to grams. g = mols x molar mass.
I assume 3.60 MJ stands for 3.60 megajoules. If not you will need t adjust the factor I used above.