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Calculate the amount of heat energy required to raise the temperature of 100 g of copper from 20°C to 70°C. Specific heat of capacity of copper = 390 J kg-1 K-1
Calorimetry
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Answer
Given,
Mass of copper (m) = 100 g = 0.1 kg
Change of temperature (△t) = (70 – 20)°C = 50°C
Specific heat capacity of copper (c) = 390 J kg-1 K-1
Amount of heat required to raise the temperature of 0.1 kg of copper = ?
From relation,
Q = m x c x △t
Substituting the values in the formula above we get,
Q = 0.1 x 390 x 50 = 1950 J
Hence, the amount of heat energy required to raise the temperature of 100 g of copper from 20° C to 70° C = 1950 J
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