The specific heat of carbon is 0.71 j/(g c) how much energy is given off as a 2 gram piece of graphite cools from 120 to 20 c

-142 joules ( or -100 joules when accounting for significant figures)

Explanation:

q = m c delta T

q = (.71)(2)(20 - 120)

q = (.71)(2)(-100)

q = -142 joules

a non redox reaction occurs when there is not a transfer of electrons. for redox reactions, which are reduction-oxidation reactions, a change in the oxidation number occurs. elements that are reduced gain electrons, and elements that are oxidized lose electrons.

explanation: