How do I calculate the net heat of reaction for the following chemical equation?

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.