Energy of Phase Changes

AP Chemistry· difficulty 4/5

Heating 18 g (1 mol) ice at 0 °C to liquid water at 0 °C requires (ΔH_fus = 6.0 kJ/mol)

A
$1.5 kJ$
B
$0.4 kJ$
C
$6.0 kJ$
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D
$40 kJ$

Explanation

All the heat is the fusion enthalpy: 1 mol \times 6.0 kJ/mol = 6.0 kJ.

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