(this is my first post I hope this is the right) Ok, so Im confused when given a problem where I have to find the missing final or initial temperature. Here is an example of one such problem that confuses me: A 68.2 g sample of copper at 21.2 °C is heated with 75.0 J. The specific heat of copper is 0.385 J/g °C. What is the final temperature of the sample? I have a big test soon..... and would really like to have a good undersating of these types of problems. ANY help would be great!