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A certain substance has a mass per mole of 53 g/mol. When 312 J is added as heat to a 26.0 g sample, the

 

A certain substance has a mass per mole of 53 g/mol. When 312 J is added as heat to a 26.0 g sample, the sample's temperature rises from 21.0C to 45.0C. What are the (a) specific heat and (b) molar specific heat of this substance? (c) How many moles are present?

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