If 25.0 g of water at 21c is mixed with 45.0 g of water at 75c, what is the final temperature of the mixture? a. 40c b. 48c c. 56c d. 63c e. 38c

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?