cold water

Question

mass of calimeter+ water: 68.66g
mass of calimeter: 19.19g
mass of water: 49.47g
final temperature of water: 39.1C
initial temperature of water: 25.5C
delta(T) of water: 13.6C

hot water
mass of calimeter+ water: 79.55g
mass of calimeter: 20.61g
mass of water: 58.94g
final temperature of water: 39.1C
initial temperature of water: 52.2C
delta(T) of water: -13.1C

calulate the q-hotwater (specific heat of water 4.18J g^-1 C^-1)

calculate the q-coldwater

can someone please explain to me how this question is done? thanks =]

Answer 1

q for hot water = mass H2O x specific heat H2O x (Tfinal-Tinitial).

q for cold water = mass H2O x specific heat H2O x (Tfinal-Tinitial).