a sample of iron undergoes an increase in temperature of 23.3C when 275J of energy are absorbed. If copper has a specific heat capacity of 0.385J/g C what is it’s mass?

Question

1. 148g
2. 30.8g
3. 4.6g
4. 23.2g
5. 275g

Answer 1

Hello, Caitlyn,

The specific heat is related to a sample's properties with the following equation:

q = C_p*(mass)(temp change), where q is the heat or energy and C_p

C_p = 0.385 J/gC

So set up an equation using M, the mass, as the unknown:

275J = (0.385 J/gC)*(M)*(23.3C)

M = 30.66 grams

Bob