Suppose you had one mole of oxygen. how many moles of hydrogen would react completely with the oxygen, and how many moles of h2o would be produced

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

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

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm