Answer to Question #328564 in Molecular Physics | Thermodynamics for anna

Question

A large pot contains 5.00×10−3 m3 of water at 23.0 °C. How much thermal energy must be removed from the water to freeze it into ice at 0.00 °C (in MJ)? [Latent heat of fusion for water: 333.4 kJ kg−1 , specific heat of water: 4190 J kg−1 K−1 , density of water: 1000 kg m−3 .]

Answer 1

$Q=\rho V(\lambda+c∆T)=2.15~MJ.$