$($a$)$

How much heat transfer $($in kcal$)$ is required to raise the temperature of a $0\mathrm{.}900$ kg aluminum pot containing $3\mathrm{.}50$ kg of water from $45\mathrm{.}0$C to the boiling point and then boil away $0\mathrm{.}850$ kg of water?

kcal

$($b$)$

How long $($in s$)$ does this take if the rate of heat transfer is $600$ W $(1$ watt $=1$ joule$/$second $(1$ W $=1$ J$/$s$))?$

s