Answer to Question #128788 in Physics for Precious Adeleye

Question

What is the amount of heat generated during the freezing of m=10kg of water taken at temperature T=0°c.The heat of ice melting is 3.3×10⁴Jkg-¹

Answer 1

The amount of heat generated during the freezing of water at temperature T=0°c can be calculated with the following formula:

$$Q = \lambda m$$

where $m = 10 kg$ is the mass of water and $\lambda = 3.3\times 10^4 J/kg$ is the heat of ice melting. Hence, obtain:

$$Q = \lambda m = 3.3\times 10^4\cdot 10 = 3.3\times 10^5J = 0.33\times 10^6J = 0.33MJ$$

Answer. 3.3×10^5 J or 0.33 MJ.