Some very hot rocks have a temperature of #960 ^o C# and a specific heat of #250 J/(Kg*K)#. The rocks are bathed in #50 L# of boiling water. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?
1 Answer
Apr 2, 2018
The minimum combined mass of the rocks is
Explanation:
The latent heat of vaporization of water is
Now, the least temperature that the hot rocks can reach is
if their combined mass is
or hence