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Calculate the amount of heat liberated in kJ from 403 g of mercury when it cools from 67.0C to 11.0C?
Wiki User
∙ 15y ago
Heat = mass * heat capacity * change in temperature
if we assume that heat capacity is constant (it isn't really, it changes with temperature, but for a change in temperature of only 56 C it isn't worth looking at), then we can find it to be approximately 140 J/kg.K (from www.allmeasures.com).
Heat = 0.403kg * 140 J/kg.C * 56 C
Heat = 3159.52 J
Heat = 3.159 kJ
Wiki User
∙ 15y ago
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