We can use the formula for heat of fusion, which is given by:
\[ q_{fus} = \Delta H_{fus} \times m \]
where \( \Delta H_{fus} \) is the heat of fusion of water (333.55 J/g), and \( m \) is the mass of the ice (70.0 g). Plugging in these values, we get:
\[ q_{fus}
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