Answer
Please see the work below.
Work Step by Step
We know that
$E=mc\Delta T$
We plug in the known values to obtain:
$E=(0.430)(4184)(100-20)$
$E=143930J$
Now we can find the power as
$P=\frac{Q}{t}$
We plug in the known values to obtain:
$P=\frac{143930}{(2.5)(60)}=960W$
