124.1g of an unknown substance absorbs 50.0kj of heat and increases its temperature by 36.3 degrees Celsius. What is the specific heat?
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Expert's answer
2018-09-03T06:22:37-0400
Solution: Q = m Cp dT where Q = heat gained or lost = 50.0 kJ = 50,000 J m = mass = 124.1 g Cp = heat capacity dT = change in temperature = 36.3 C Cp = Q / (m dT) Cp = (50,000 J) / (124.1 g x 36.3 C) = 11.1 J/gC Answer: 11.1 J/gC
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