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Chemistry!

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The heat lost or gained by a system is related to its temperature change by a property called its heat capacity. The molar heat capacity of metals at or above room temperature equals 24.92 J K-1mol-1.

The temperature of a block of copper metal (molar mass 63.55 g mol-1) fell by 11.5 K when the copper block released 32.5 J of heat. What is the mass of the copper block?

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