Question

How much energy is required to raise the temperature of 5.00 kg of lead from 20.0 oC to its melting point of 327oC? (The specific heat of lead is 128J/kgoC.

Answer 1

$$Q=mc\Delta T,$$ Q=5.0\ kg\cdot128\ \dfrac{J}{kg\cdot \!^{\circ}C}\cdot307\ ^{\circ}C=1.96\cdot10^5\ J.