Q$11\mathrm{.}18$

Homework $*$ Answered $-$ Due Jan $26$th$,11$:$59$ PM

Determine the amount of heat required to convert $65\mathrm{.}25g$ of solid $Ca$ at $651C$ into liquid $Ca$ at $951C.$ The following information on Ca may be used to calculate the amounts of heat for each of the heating steps.

Melting$/$Boiling Point

Melting point: $851C$

Boiling point: $1487C$

Specific Heat Capacities

$C_{\text{s}\text{o}\text{l}\text{i}\text{d}}=0\mathrm{.}65$ joules per gram $(\frac{J}{g})C$

Cliquid $=0\mathrm{.}77\frac{J}{g}C$

$H_{\text{f}\text{u}\text{s}\text{i}\text{o}\text{n}}=9\mathrm{.}33k\frac{J}{m}ol$

$H_{\text{v}\text{a}\text{p}\text{o}\text{r}\text{i}\text{z}\text{a}\text{t}\text{i}\text{o}\text{n}}=162k\frac{J}{m}ol$

$($Answer in $kJ)$

$[$Image description: A graph. The y$-$axis is labelled "Temperature $(C).$ The $x-$axis is labelled "Heat added $(kJ)."$ There are five regions on the graph. In region I, a line starts at the origin and slopes upward to the right