I am working on a proble with this basic set up: 500g of some material starts at -22'C in a 400g container. 90g of steam (water) starts at 120'C and is mixed with the unknown material. Find the final temp. and amount of material and water in each state. Unkown c(solid) = 0.4 cal/g'c Melting = 20'c c(liquid) = 0.9 cal/g'c Boiling = 80'c c(vapor) = 0.6 cal/g'c Hf = 100 cal/g Hv = 600 cal/g ***Specific Heat of container is 0.2 cal/g'c Can someone point me in the right direction, OR work it out if you are so inclined!