How much energy is needed to warm 7.40g of water by 55 degress C?

E = mCdT

E = energy, m = mass, C = specific heat capacity, dT = change in temperature.

526 = 0.074C x 17

E = 0.074C x 55

Divide the equations

E/526 = (0.074C x 55) / (0.074C x 17) = 55/17

E = (55 x 526) / 17 = 1702 J