Calculate the partial pressure of helium gas for a volume of 1.0 x 10^-6 m^3 of 212rn gas after 91 minutes. the radon gas was originally placed in an evacuated container at 1 atm, and the temperature remains constant at 0°c. (t1/2 = 23.9 min for 212rn.)
what is the partial pressure of the radon gas after this time?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.