$[0/10$ Points$]$

SERCP$1111\mathrm{.}4.$P$\mathrm{.}030.1/5$ Submissions Used

A $60-g$ ice cube at $0C$ is heated until $52\mathrm{.}7$ g has become water at $100C$ and $7\mathrm{.}3$ g has become steam at $100C.$ How much energy was added to accomplish the transformation?

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$10.[-/10$ Points$]$

SERCP$1111\mathrm{.}5.$P$\mathrm{.}049.$MI$.0/5$ Submissions Used

A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at $100C,$ and that of the far end of the aluminum rod is held at $0C.$ If the copper rod is $0\mathrm{.}12$ m long, what must be the length of the aluminum rod so that the temperature at the junction is $50C?$

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