changes made:

design the water properties and rate of heat flow to depend on water instead of the older surrounding
made water mass and initial temperature variables
added hints and answers Qsolid and Qwater, notice Qsolid + Qwater = 0, assuming no heat Q loss to surrounding


data here https://docs.google.com/spreadsheet/ccc?key=0AjIvSg-TzZrZdFpVOXRTMlZrb2J1UEd5VThxZlJrQlE
m C Ti Tf Q = mc(tf-Ti) Tf-Ti
0.1 385 20 52.6 1,255 32.6
0.1 385 20 61.9 1,613 41.9
0.1 385 20 71.2 1,971 51.2
0.1 385 20 80.6 2,333 60.6
0.1 385 20 89.9 2,691 69.9

work in progress
enjoy!