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Ethanol (C2H5OH)melts at -114°C

question 21

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Ethanol (C2H5OH) melts at -114°C.The enthalpy of fusion is 5.02 kJ/mol.The specific heats of solid and liquid ethanol are 0.97 J/g∙K and 2.3 J/g∙K,respectively.How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135°C to liquid ethanol at -50°C?

Recognize the importance of the percentage of sales approach and its requirements.
Identify the factors influencing sales forecasts in financial planning.
Understand key dimensions of financial planning: planning horizon and aggregation.
Grasp the concept of working capital decisions in financial planning.

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