How many degrees will the temperature of 2 kg of paraffin increase if 240 kJ of heat was spent on heating it?

Initial data: m (paraffin mass) = 2 kg; Q (the amount of heat spent on heating paraffin) = 240 kJ = 240 * 10 ^ 3 J.

Reference data: C (specific heat capacity of paraffin) = 2.19 kJ / (kg * K) = 2.19 * 10 ^ 3 J / (kg * K).

We express the change in the paraffin temperature from the formula: Q = C * m * Δt, whence Δt = Q / (C * m).

Let’s calculate: Δt = 240 * 10 ^ 3 / (2.19 * 10 ^ 3 * 2) ≈ 55 ºС.

Answer: The temperature of the paraffin will increase by 55 ºС.