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OpenStudy (anonymous):
How much heat is necessary to melt 56.72 grams of substance Y from solid phase at 15 degrees Celsius to liquid at the same temperature? Melting point of substance Y = 15 degrees Celsius; ΔHvaporization = 2.83 J/mol; ΔHfusion = 5.51 J/mol; MWsubstance y = 14.77 g/mol.
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