What is the lewis dot structure for C3H3Na?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

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

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?