Question #b579a

1 Answer
Mar 27, 2017

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