What amount of heat must be imparted to water weighing 1 kg in order to heat

What amount of heat must be imparted to water weighing 1 kg in order to heat it from 10 ° to 20 ° C? Specific heat capacity of water 4200J / kg • ° С?

Initial data: m (mass of water) = 1 kg; t0 (water temperature before heating) = 10 ºС; t (final temperature) = 20 ºС.

Reference values: according to condition C (specific heat capacity of water) = 4200 J / (kg * ºС).

The amount of heat that must be reported to 1 kg of water is determined by the formula: Q = C * m * (t – t0) = 4200 * 1 * (20 – 10) = 4200 * 1 * 10 = 42 * 10 ^ 3 J (42 kJ).

Answer: Water must be supplied with 42 kJ of thermal energy.