Calculate the average translational kinetic energy, ?k, for one mole of gas at 745 K. Translational kinetic energy is sometimes called average kinetic energy.   ?k= _________________J/mol   Calculate the average translational kinetic energy for a single gas molecule at 745 K.   ?k=___________________J/molecule

163. The total mass that the instrument can lift is the difference between the mass of air and the mass of the gas in the instrument, which corresponds to the volume of the instrument. Consider an instrument that can be heated to 65°C with an approximate diameter of 5.00 m. The ambient air temperature is 21°C. The pressure in the instrument is equal to the pressure in the atmosphere and is 745 torr. a. The total mass that the instrument can lift? Suppose that the average molecular weight of air is 29.0 g/mol (Hint: heated air is less dense than cold air). b. When the instrument is filled with helium at 21°C and 745 torr (equivalent to volume a), what is the total mass that the instrument can lift? c. If there is an instrument at Denver, Colorado, where the normal atmospheric pressure is 630. torr, what is the total mass that the instrument can lift?

A 1.20-mol sample of oxygen gas is confined to a 4.99-L vessel at a pressure of 7.97 atm. Find the average translational kinetic energy of the oxygen molecules under these conditions.

Consider 3.01*10^24 molecules of oxygen (atomic mass is 16.0 g/mole) in a container at a temperature of 22.0 degrees celsius. If this gas can be considered as an ideal gas, calculate: 1.The Average translational kinetic energy of the gas. 2.The average translational kinetic energy per molecule 3. The root mean square speed of a gas molecule. 4. The most probable speed of the gas molecules.

16.

Application of gas laws to atmospheric science

A 1.56 mol sample of O2 gas is confined in a 37.6 liter container at 20.9 °C. If 1.56 mol of H2 gas is added and the volume and temperature of the system are held constant, explain in at least one sentence what will happen to... a. The average molecular speed of the system. In your answer, you should indicate whether the average molecular speed will increase, decrease or remain the same, and also indicate your reasoning why. b. The average kinetic energy of the system. In your answer, you should indicate whether the average kinetic energy will increase, decrease or remain the same, and also indicate your reasoning why.

A 4.0 L pickle jar is filled with O2 gas at room temperature, 25°C. The jar is sealed and placed into the refrigerator, with a temperature of 4°C. Assuming that no liquefying of gases occurs (all the gas is still there), what will happen to the O2 gas now that it is in a colder environment?   a The O2 molecules will collide more frequently with the sides of the jar. b The translational motion of the O2 molecules will increase. c The kinetic energy (energy of motion) of the O2 molecules will be reduced. d The particles of the gas will completely stop moving.

Which of the following assumptions are made by the kinetic molecular 1 point theory of gases? I. Gas molecules move randomly in all directions. li. Gas molecules exhibit negligible intermolecular forces. II. Gas molecules have negligible volume. I and Il only I and III only I only Il only I, II, and III étv MacBook PrO #3 2 4. 7 8 Q W Y R

1. A 2.00L flask contains Ar(g) at 752mmHg and 35oC. A 0.728g sample of C6H6(g) is added. A. Calculate the total pressure in the flask. B. What is the mole fraction of Ar(g)?