Question

Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 0.450 kg of water decreased from 111 °C to 46.0 °C.

Property	Value	Units
Melting point	0	°C
Boiling point	100.0	°C
ΔHfus	6.01	kJ/mol
ΔHvap	40.67	kJ/mol
cp (s)	37.1	J/mol · °C
cp (l)	75.3	J/mol · °C
cp (g)	33.6	J/mol · °C

Answer 1

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