A sample liquid cesium is heated in an oven to 400 °C and the resulting vapor is used to produce an atomic beam. The volume of the oven is 55 cm3 , the vapor pressure of Cs at 400 °C is 17 mm Hg and the diameter of the cesium atoms in the vapor is 0, 33 nm. Part A Calculate the mean speed of cesium atoms in the vapor. Express your answer using Incorrect v = 355 Your Answer: 355 Correct Answer: 330 ± 2.0% Part B Determine the number of collisions a single Cs atom undergoes with other cesium atoms per second. Express your answer using two significant figures. f = Number collisions/s

A sample liquid cesium is heated in an oven to 400 °C and the resulting vapor is used to produce an atomic beam. The volume of the oven is 55 cm3 , the vapor pressure of Cs at 400 °C is 17 mm Hg and the diameter of the cesium atoms in the vapor is 0, 33 nm. Part A Calculate the mean speed of cesium atoms in the vapor. Express your answer using Incorrect v = 355 Your Answer: 355 Correct Answer: 330 ± 2.0% Part B Determine the number of collisions a single Cs atom undergoes with other cesium atoms per second. Express your answer using two significant figures. f = Number collisions/s