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The fluorocarbon compound C2Cl3F3 has a normal boiling point of 47.6°C. The specific heats of C2Cl3F3(l) and C2Cl3F3(g) are 0.91 J/g⋅K and 0.67 J/g⋅K, respectively. The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 42.5 g of C2Cl3F3 from a liquid at 11.00°C to gas at 99.05°C.

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Alyssa Mae Remarim
Alyssa Mae RemarimLv10
18 Nov 2020

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[A] 414 [B] 0.414 [C] 2.16 [D] 4.73 [E] 2.16

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Ethanol melts at -114.0 ?C. The enthalpy of fusion is 5.02 kJ/mol and the enthalpy of vaporization is 38.6 kJ/mol. The specific heats of solid and liquid ethanol are 0.970 J/g?K and 2.30 J/g?K, respectively.

How much heat is needed to convert 55.5g of solid ethanol at -182.5?C to liquid ethanol at -50.0?C ?

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