What amount of heat is required to heat water from 20 ° C to boiling

What amount of heat is required to heat water from 20 ° C to boiling, if the volume of water is 3 liters, the specific heat capacity is 4200J / kg ° C.

Given: t (the temperature that the water had before heating) = 20 ºС; V (volume of water taken) = 3 liters (3 * 10-3 m3).

Reference values: ρw (fresh water density) = 1000 kg / m3; by condition C (specific heat of water) = 4200 J / (kg * ºС; tк (boiling point) = 100 ºС.

1) Calculate the mass of 3 liters of water: m = ρw * V = 1000 * 3 * 10-3 = 3 kg.

2) Determine the cost of heat for heating water: Q = C * m * (tк – t) = 4200 * 3 * (100 – 20) = 4200 * 3 * 80 = 1008000 J.

Answer: D) 1008000 J.