5.00 g of Fe (specific heat = 0.449 j/k g) at 400k is put into 10.0g of water (specific heat 4.18 j/k g) at 290K.
a) ignoring the heat capacity of the calorimeter, what is the final temperature?
b) if the calorimeter has a heat capacity of 500 j/K, what is the final temperature?