## Chemistry and Chemical Reactivity (9th Edition)

From the conservation of energy principle: $500.\ mL\times 1\ g/mL\times 4.184\ J/g.K \times (20.0-0.0)\ K=333\ J/g\times m$ $m=125.6\ g$ melted Remaining: $3\times 45-125.6=9.35\ g$