How many degrees can 10 kg of copper be heated using the amount of heat that can be released

How many degrees can 10 kg of copper be heated using the amount of heat that can be released during the complete combustion of 100 g of firewood?

Initial data: m1 (mass of heated copper) = 10 kg; m2 (mass of burnt wood) = 100 g = 0.1 kg.

Reference data: C (specific heat of copper) = 400 J / (kg * K); q (specific heat of combustion of dry wood) = 1 * 10 ^ 7 J / kg.

The increase in temperature of 10 kg of copper can be determined from the equality: C * m1 * Δt = q * m2, whence Δt = q * m2 / (C * m1).

Let’s calculate: Δt = 1 * 10 ^ 7 * 0.1 / (400 * 10) = 250 ºС.

Answer: The temperature of 10 kg of copper will increase by 250 ºС.