What is the mass of water if 5.05 • 10 ^ 5 J of heat was spent to heat it by 20 ° C?

The amount of heat that was spent on heating water can be calculated using the formula:

Q = C * m * ∆t, where Q is the consumed amount of heat (Q = 5.05 * 10 ^ 5 J), C is the specific heat capacity of water (C = 4200 J / (kg * K)), m is the mass of heated water, ∆t – change in water temperature (∆t = 20 ºС).

Let us express and calculate the mass of heated water:

m = Q / (C * ∆t) = 5.05 * 10 ^ 5 / (4200 * 20) ≈ 6 kg.

Answer: The mass of water is 6 kg.