# Given the specific heat of lead is 0.129 J/g#*#K and that it takes 93.4 J of energy to heat a sample of lead from 22.3°C to 40.°C, how do you find the mass of the lead.?

##### 1 Answer

#### Explanation:

The equation you want is

where *change*).

In the question, we want to find mass, so we rearrange to make mass the subject:

We know that

(We can easily convert between

Now we have