How much water remains unfrozen after 47.2 kJ is transferred as heat from 333 g

Question

How much water remains unfrozen after 47.2 kJ is transferred as heat from 333 g of liquid water initially at its freezing point? The latent heat of fusion is 333 kJ/kg.

the tolerance is +/-2%

How much water remains unfrozen after 47.2 kJ is transferred as heat from 333 g of liquid water initially at its freezing point? The latent heat of fusion is 333 kJ/kg.

the tolerance is +/-2%

How much water remains unfrozen after 47.2 kJ is transferred as heat from 333 g of liquid water initially at its freezing point? The latent heat of fusion is 333 kJ/kg.

the tolerance is +/-2%

Explanation / Answer

The amount of water at the freezing point converted to the ice is
m = Q / L
Where L is the latent heat of fusion and Q is the amount of energy transferred.
m = 47.2 kJ / 333k J/kg = 0.141.74 kg = 141.74 g
This much of water is converted to ice.
The amount of water remains unfrozen is
m = 333 g - 141.74 g =  191.26 g

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