Calculate the amount of heat required to heat a 1.5 kg cast iron to change its temperature by 200C.

These tasks: m (weight of the cast iron in question) = 1.5 kg; Δt (change in iron temperature) = 200 ºС.

Reference values: Сч (specific heat capacity of cast iron) = 540 J / (kg * K).

The heat required to heat the cast iron in question is determined by the formula: Q = Сч * m * Δt.

Let’s calculate: Q = 540 * 1.5 * 200 = 162 * 10 ^ 3 J (162 kJ).

Answer: To heat the cast iron in question, 162 kJ of heat is required.