How many times faster can Ne atoms travel than Xe atoms?​

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?

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

The fact that the total amount of energy in a system remains constant is a(n)