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# Cooling Water with Ice Cubes

CHEM-E611LN

Ice cubes at 0.0 °C are added to 100.0 grams of water at 21.0 °C. After the ice melts, the temperature is 12.0 °C.

Assuming no heat is lost to the surroundings, calculate the mass of ice cubes added in grams.

$\Delta { H }_{ fusion }$ = 6.01 kJ/mol Normal melting point = 0.0 ℃ ${ s }_{ solid }$ = 36.9 J/mol ℃
$\Delta { H }_{ vaporization }$ = 40.7 kJ/mol Normal boiling point = 100.0 ℃ ${ s }_{ liquid }$ = 75.4 J/mol ℃