How much thermal energy, in joules, is required to increase the temperature of a 115-g water sample by 10.0 C

Answer 1

The specific heat of liquid H2O is 4.184 J/g/deg

q = mC∆T where q = heat; m = mass; C = sp. heat; ∆T = change in temperature

q = (115 g)(4.184 J/g-deg)(10.0 deg) = 481 J (3 sig. figs.)