$*2\mathrm{.}5-kg$ block of $-12\mathrm{.}0C$ ice is placed in a thermally isolated chamber with $3\mathrm{.}5$ kg of $120\mathrm{.}0C$ stean. When the system in the chamber reaches equilibrium, what are the final state and temperature of the $H_{2}O?$ Example $14-8$