What mass of water can be heated by 10 C degrees, giving it 63 kJ of heat?
| February 10, 2021 | education
The mass of water can be calculated from the following formula:
Q = C * m * Δt, where Q is the heat that was imparted to the water (Q = 63 kJ = 63 * 10 ^ 3 J), C is the specific heat capacity (for water C = 4200 J / (kg * K)), m – the required mass of water (kg), Δt – the change in water temperature (Δt = 10 ºС).
Let us express from the formula and calculate the mass of heated water:
m = Q / (C * Δt) = 63 * 10 ^ 3 / (4200 * 10) = 1.5 kg.
Answer: Having reported 63 kJ of heat, 1.5 kg of water can be heated.
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