# Some very hot rocks have a temperature of #240 ^o C# and a specific heat of #240 J/(Kg*K)#. The rocks are bathed in #16 L# of water at #70 ^oC#. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?

##### 1 Answer

You need the heat of vaporization to answer the question.

About

#### Explanation:

The heat of vaporization for water is

Then, let's solve the problem with the formula ** #Q=mcΔT#**.

(

Let

If

And, if

The heat energy must follow the law of energy conservation law.

Therefore, the mass of rocks is