Calculate the energy required to heat 0.60kg of ethanol from 2.2°C to 13.7°C.

Question

Calculate the energy required to heat 0.60kg of ethanol from 2.2°C to 13.7°C.

Assume the specific heat capacity of ethanol under these conditions is ·2.44J·g−1K−1.

Be sure your answer has the correct number of significant digits.

Answer 1

Once again...

q = mC∆T

q = (0.60 kg x 1000 g/kg)(2.44 J/gº)(11.5º) = 17 kJ (to 2 sig. figs.)