Why it is easier to install a hand pumps in plain region in compare to plateaus regions

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm