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Ethanol ( OH)melts at -114 °C

Question 1

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Ethanol ( Ethanol ( OH) melts at -114 °C.The enthalpy of fusion is 5.02 kJ mol<sup>-1</sup>.The specific heats of solid and liquid ethanol are 0.97 J g<sup>-1</sup> °C<sup>-1</sup> and 2.3 J g<sup>-1</sup> °C<sup>-1</sup>,respectively.How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50 °C? A) 207.3 kJ B) -12.7 kJ C) 6.91 kJ D) 4192 kJ E) 9.21 kJ Ethanol ( OH) melts at -114 °C.The enthalpy of fusion is 5.02 kJ mol<sup>-1</sup>.The specific heats of solid and liquid ethanol are 0.97 J g<sup>-1</sup> °C<sup>-1</sup> and 2.3 J g<sup>-1</sup> °C<sup>-1</sup>,respectively.How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50 °C? A) 207.3 kJ B) -12.7 kJ C) 6.91 kJ D) 4192 kJ E) 9.21 kJOH) melts at -114 °C.The enthalpy of fusion is 5.02 kJ mol-1.The specific heats of solid and liquid ethanol are 0.97 J g-1 °C-1 and 2.3 J g-1 °C-1,respectively.How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50 °C?


A) 207.3 kJ
B) -12.7 kJ
C) 6.91 kJ
D) 4192 kJ
E) 9.21 kJ

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