Please provide a step by step explanation for number 8 only. I don\'t need 7 or

Question

Please provide a step by step explanation for number 8 only. I don't need 7 or 9. I don't care about the right answer, just how you would do it correctly. Thanks in advance.

Which set of these statements includes all that are correct and no others? the absolute temperature of a gas is a measure of the average translational kinetic energy of its particles. The average distance between the particles of a substance in the gas phase is much greater the the distance between the particles of the same substance in the liquid phase. The pressure of a gas depends in part on the number of particles that collide with its container walls per second. Selected Answer: 5.1) and 2) only Correct Answer: 4.1), 2) and 3) The relative times required for gases to effuse are given by the equation below. A sample of an unknown gas effuses in 11.1 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.42 min. What is the molar mass of the unknown gas? time of gas A/time of gas B = where M = molar mass Selected Answer: d. 0.108 g/mol Correct Answer: b. 42.4 g/mol Which of the following pairs of gas properties involve variables that are inversely proportional? Selected Answer: e. P, n Correct Answer: d. n, T

Explanation / Answer

from TA/TB = sqrt( MA/MB)

we can wirte

MA/MB = (TA/TB)^2

MA/MB = (11.1/2.42)^2 = 21.03

MA = 21.03* Molar mass of H2

MA = 21.03 *2

Ma = 42.06 g/mol

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