The specific heat of a substance is the energy required to produce a certain change in
a) appearance
b) volume
c) state
d) temperature

The answer is D.

Explanation:

This is because it is temperature change.

Hope This Helps!

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

what is the question here. i think you messed up.