When you mix two substances that are initially at different temperatures, the hotter substance cools and the colder substance warms until they reach a common temperature. Then the substances are said to be in thermal equilibrium. For our purposes assume that the heat is exchanged only between the hot and cold materials and that no heat is lost to the surroundings. The specific heat capacity of water is 1.0cal/(gC0) and the specific heat capacity of copper is 0.092cal/(gC∘)
1) What would be the final temperature when 80 g of hot water at 70∘C is combined with 90 g of cold water at 10∘C. Tfinat =
2) What would be the final temperature when 240 g of copper at 220∘C is combined with 90 g of cold water at 10∘C. Tfinal =