The specific heat of a certain type of cooking oil is 1.75 J/(g • °C). How much heat energy is needed to raise the temperature of 2.02 kg of this oil from 23 °C to 191 °C?
We’re being asked to determine the amount of heat (Q) needed to raise the temperature of 2.02 kg cooking oil from 23 ˚C to 191 ˚C. The amount of heat Q is given by:
where m = mass (in grams), c = specific heat, ΔT = change in temperature = final T – initial T. We’re given the following values:
m = 2.02 kg
c = 1.75 J/g • ˚C
ΔT = 191 ˚C – 23 ˚C = 168 ˚C