Question

Question #b579a

Answer 1

`4627J` or `4.6 kJ`

Explanation:

Recognize the equation to use

`q=m*c*DeltaT`

We know the mass(`m`)- `66.7g`

We know the specific heat capacity(`c`)-`0.75J/(g˚C)`

We can find `DeltaT` from

`DeltaT=T_2 - T_1=92.5-0`

`DeltaT=92.5˚C`

`:.q= 66.7cancelg*0.75J/cancel(g˚C)*92.5cancel(˚C)`

`rArrq=4627J or 4.6kJ`

To get `kJ`, simply multiply by `10^-3` or divide by `1000`

This is how

`4627cancelJ*(1kJ)/(1000cancelJ)`

`OR`

`4627*10^-3kJ`