Question

How much energy is required to increase the temperature of 10kg of water by 50°C?
The specific heat capacity of water is 4200J/kg °C. Use the equation
change in thermal energy = mass specific heat capacity x temperature change.

Answer 1

Explanation:

Q = mc∆T

Known and Unknown

Q = heat energy = ? kJ

m = mass = 10 kg

c = specific heat capacity of water = 4.2 kJ/kg•K = 4.2 kJ/kg•°C

∆T = change in temperature = 50 °C

Solve for Q.

Q = 10 kg × 4.2 kJ/kg•°C × 50 °C = 2100 kJ = 2000 kJ