Chapter 12, Problem 66PE

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

Chapter
Section

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

# Suppose hydrogen and oxygen are diffusing through air. A small amount of each is released simultaneously. How much time passes before the hydrogen is 1.00 s ahead of the oxygen? Such differences in arrival times are used as an analytical tool in gas chromatography.

To determine

The time passed before hydrogen is 1 second ahead of oxygen.

Explanation

Given info:

Hydrogen is one second ahead of oxygen. Also,

â€ƒâ€ƒDH2=Â 6.4Â Ã—10-5m2/sDO2=1.8Ã—10-5m2/s

Formula used:

â€ƒâ€ƒXrms,Â A=(2DA2tA2)

DA= Acceleration due to gravity

TA= time taken

Calculation:

The distance travelled is same, thusto2=Â tH2+1.00Â s

â€ƒâ€ƒXrms,O2=(2Do2to2)Xrms,H2=(2DH2tH2

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