A spherical balloon with a volume of 3.95 x 103 cm3 and a pressure of 1.15 x 105 Pa contains helium. How many moles of helium are contained in the balloon if the helium atoms' average kinetic energy is 3.60 x 10-22 J? At a pressure of 8.02 atm, a 1.40-mol sample of oxygen gas is contained in a 4.90-L jar. Calculate the oxygen molecules' average translational kinetic energy under given circumstances.

A spherical balloon with a volume of 3.95 x 103 cm3 and a pressure of 1.15 x 105 Pa contains helium. How many moles of helium are contained in the balloon if the helium atoms' average kinetic energy is 3.60 x 10-22 J? At a pressure of 8.02 atm, a 1.40-mol sample of oxygen gas is contained in a 4.90-L jar. Calculate the oxygen molecules' average translational kinetic energy under given circumstances.