What is the mass of a piece of copper if 16,000 kJ of heat was spent on heating it from 10 to 210 degrees?

To find the value of the mass of a heated piece of copper, we will use the formula: Q = Cm * m * (t – t0) and m = Q / (Cm * (t – t0)).

Variables and constants: Q – consumed amount of heat (Q = 16,000 kJ = 16 * 10 ^ 6 J); Cm – specific heat capacity of copper (Cm = 400 J / (kg * ºС)); t is the temperature of the piece after heating (t = 210 ºС); t0 – initial temperature (t0 = 10 ºC).

Calculation: m = Q / (Cm * (t – t0)) = m = 16 * 10 ^ 6 / (400 * (210 – 10)) = 200 kg.

Answer: A heated piece of copper has a mass of 200 kg.




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