Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k? a.2h2(g) + o2(g) 2h2o(g) + 483.6 kj b.2h2(g) + o2(g) 2h2o(l) + 285.8 kj c. h2(g) + o2(g) h2o(g) + 483.6 kj d. h2(g) + o2(g) h2o (l) + 285.8 kj?

Initially, the balloon had 3.0 liters of gas at a pressure of 400 kpa and was at a temperature of 294 k. if the balloon is cooled to 277 k and its volume decreased to 1 l, what will the new pressure in the balloon be?

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

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