A pan containing 20 grams of water was allowed to cool from temperature of 95 degrees C. If the amount of heat released is 1200 joules, what is the approximate final temperature of the water

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?