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1) When 1554 J of heat energy is added to 49.5 g of ethanol, C2H6O, the...

1) When 1554 J of heat energy is added to 49.5 g of ethanol, C2H6O, the temperature increases by 12.8 °C. Calculate the molar heat capacity of C2H6O.

2) Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.40 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 J/(K·mol) for Na(l) at 500 K.

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