Recall that during a **phase transitio****n**, the **temperature is constant**. The ** amount of energy (q)** needed to melt a given mass is calculated using:

$\overline{){\mathbf{q}}{\mathbf{=}}{\mathbf{m}}{\mathbf{\u2206}}{{\mathbf{H}}}_{{\mathbf{fus}}}}$

The molar heat of fusion of water is 6.02 KJ/mol. calculate the energy required to melt 3.96 mole of ice.

The molar heat of fusion of water is 6.02KJ/mol. Calculate the energy required to melt 16.6 g of water.

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