$1.$ Acetone has a vapour pressure of $322mmHg$ at $25C.$ If $\frac{?}{{?}_{\frac{?}{?}}{?}_{\text{V}\text{A}\text{P}\text{H}}}=34\mathrm{.}0k\frac{J}{m}ol,$ what is the vapour pressure at $0C?$

$2.$ Water has a vapour pressure of $23\mathrm{.}8mmHg$ at $25C.$ If its ${}_{\text{V}\text{A}\text{P}}H$ is $38\mathrm{.}14k\frac{J}{m}ol,$ what would be its normal boiling

point?

$3.$ How much energy is required to heat a $38g$ sample of ice from $-12C$ to $107C?$

$4.$ if a $1500$ W hair dryer is used to heat up the ice$/$water$/$steam in question $3,$ how long would it take?

$5.$ How much energy is released when $1\mathrm{.}21kg$ of ice freezes?