KOH + Al2(SO4)3 → Al(OH)3 + K2SO4 How many molecules of KOH are needed to prepare 56.8 moles of Al(OH)3?

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.