Calculate the heat in joules "Q" needed to raise 27.0 g of water from 10.0 °C to 90.0 °C.

9028.8 J

Explanation:

The equation for working out the amount of thermal energy required is q = m c Δ T, where q is the amount of energy, m is the mass being heated up in grams, c is the specific heat capacity of what you're heating up in joules per gram per kelvin, and Δ T is the change in temperature in Kelvin. (Change in temperature will always give the same value, no matter Celsius or Kelvin)

mass = 27g, assuming specific heat capacity of water is 4.18 J/g*K, and the change in temperature is 90-10 (=80), the energy needed to raise : 80 * 27 * 4.18 = 9028.8 J