Self-Assessment Quiz #2 Begin Date: 1021/2017 12:01:00 AM-Due Date: 1 1/29 2017

Question

Self-Assessment Quiz #2 Begin Date: 1021/2017 12:01:00 AM-Due Date: 1 1/29 2017 I 1:59:00 PM End Date:1 2 2017 11:s (20%) Problem 4: Hydrogen molecules, with a molar mass of 2.016 grn 1, in a certain gas have an mms speed of 380 m s. what is the temperature of this gas, in kelvins? Grade 5 sin cos0 tan) 78 9 cotan0 asinacos0 tn ac) sinh0 cosh cotanh0 Submiss Amempts 4 5 6 1 2 3 ODegrees Radians Submit I give up Hints-for a deduction. Hints re iing: Feedback: 2% deduction per feedback. How is the ms velocity of molecules in a gas related to the temperatune of the gas? Notice this is a diatomic molecule, so you need to correctly count the internal degrees of freedom 889 3 5 7

Explanation / Answer

4.

a)

rms speed is given as

Vrms = sqrt(3RT/M)

380 = sqrt(3 (8.3140) T/(2.016 x 10-3))

T = 11.7 K

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