Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.

Question

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed at any point until time has expired. The timer will continue to run if you leave the test. Remaining Time: 1 hour, 58 minutes, 57 seconds. Question Completion Status: Moving to another question will save this response. 2 estion 39 Ditfusing Hydogen (H2) A Osygen (O) Onygen (02) In exactly one minute, how much farther (on average) does hydrogen diffuse in air than oxygen? 6.ix10 8x10- Water 10x10 O a.7.6mm O b. 4.1 cm O c. 4.7 cm O d. 8.8 cm Moving to another question will save this response.

Explanation / Answer

Given time, t = 1 min = 60 s

Now, use the follwing expression to know the difference of distance travlled by bothe the molecules -

s = (1/2)*a1*t^2 - (1/2)*a2*t^2 = 0.5*60^2*[(6.4 x 10^-5) - (1.8 x 10^-5)] = 1800 * 4.6 x 10^-5

= 0.0828 m = 8.28 cm

This value is closer to the option (d)

Hence, option (d) is the correct answer.

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