Question

How much heat does it take to raise the temperature of 5.0 kg of plastic from 15°C to 75°C? The specific heat of plastic is 2.60 kJ/(kg × °C).

Answer 1

where

m is the mass

c is the specific heat capacity

ΔT is the change in temperature

In your problem,

m=2.5 kg

c=2.60 kJ⋅°C-1kg-1

Δ

∴ q=2.5kg×2.60 kJ⋅°C-1⋅kg-1×60°C=390 kJ