Question

A swimming pool containing 10,000L of water is frozen solid, at -5 °C. (Assume its one of those above ground ones). A 40kW heater (40kJ/s) is to be used to melt the ice and heat the pool to 20 ° C.

How long does the heater have to run? Answer in hours

BREAK IT INTO STEPS!

Heat of fusion of ice: 6.01kJ/mol

Specific heat of water: 4.184J/g °C

Specific heat of ice: 2.03J/g °C

The density of ice is 0.917 g/mL).