A fixed quantity of a gas is subjected to a decrease in volume and an increase in temperature. Suppose 130.7 grams of Mg are added to a concentrated hydrochloric acid solution and hydrogen gas is liberated according to the following equation. NO 2 D. air E. all have the same mass density 7. A sample of the gas occupying 2.241 L at 0 degrees C and 1.00 atm is found to weigh 4.21 grams. The average kinetic energy of the molecules is directly proportional to the square root of the temperature of the sample and independent of their mass.
Molecules are in constant chaotic motion moving in straight lines between collisions.
III.All the molecules in a sample at fixed T have the same kinetic energy. All molecules in a sample are traveling at the same speed. In the separation of gaseous helium from water vapor by an effusion process, the helium will effuse from the container at how many times the rate of water vapor effusion.