A piece of copper alloy with a mass of 84.6 g is heated from 30.0°C to 48.4°C. During this process, it absorbs 513 J of energy as heat
(a) What is the specific heat of this copper alloy?

(b) How much energy will that same heated sample lose if it is then cooled to 27°C?

I understand A and got .33 J/g·K which was correct but have tried B several times and still can't get the right answer