Question

What is the specific heat of an unknown substance if 2000 J energy are required to raise the temperature of 4 grams of the substance 5°C?

Answer 1

`C_s = (100J)/(g*°C)`

In English: it requires 100J of energy to raise one gram of this substance one degree celsius/kelvin.

Explanation:

We're looking for the equation that relates all of these variables:

`q = mC_sDeltaT`,

where `q` is the energy in Joules (J), `m` is the mass, `C_s` is the specific heat, and`Delta T` is the change in temperature.

`2.000*10^3J = 4g * 5°C*C_s`

`C_s = (100J)/(g*°C)`