Question

ANSWER ASAP

Answer 1

The amount of heat needed to increase the temperature of a substance by $\Delta T$ is given by
$Q=mC_s \Delta T$
where
m is the mass of the substance
Cs is the specific heat capacity of the substance
$\Delta T$ is the increase of temperature of the substance

If we plug the data of the problem into the formula, we find
$Q=(12.5 g)(0.125 cal/g^{\circ}C)(100.0^{\circ}C-20.0^{\circ}C)=125 cal$
and this is the amount of heat needed to bring 12.5 g of aluminium from 20 degrees to 100 degrees.