A 618 g sample of water at 73◦C is mixed with
478 g of water at 34◦C.
What is the final temperature of the mix-
ture? Assume no heat loss to the surround-
ings.
Answer in units of ◦C.
final temp t
Cv = specific heat capacity of fluid
heat in to lower = 478 * Cv * (t-34)
heat out of upper = 618 *Cv*(73-t)
heat into cold = heat out of hot
478 (t-34) = 618 (73-t)
solve for t