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VINAYAK PAWAR Grade:
        

1. At what temperature the mean speed of the molecules of hydrogen gas equals the escape speed from the earth


2. Estimate the number of collisions per second suffered by a molecule  in a sample of hydrogen gas at STP. The mean free path (average distance covered by a molecule between two successive collisions )=1.38×10-5.


 

6 years ago

Answers : (2)

Askiitians Expert Soumyajit IIT-Kharagpur
28 Points
										

Dear Vinayak Pawar,


Solution of Question no 1:


Let at temp T K it happens hence the equation is


√(8RT/∏M)=√(2GMe/Re)


where Re=radious of the earth.


        Me=mass of the earth.


M=molar mass of H2.


solving we get T=11810.1 degree


=12083.1 K


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Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We
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All the best Vinayak Pawar !!!


 



Regards,


Askiitians Experts
Soumyajit Das IIT Kharagpur

6 years ago
AskiitianExpert Pramod-IIT-R
47 Points
										

Dear Mr. Vinayak Pawar,

Solution of Question no 1:
Let at temp T K it happens hence the equation is


√(8RT/∏M)=√(2GMe/Re)

where Re=radious of the earth; Me=mass of the earth; M=molar mass of H2.
solving we get T=11810.1 degree

=12083.1 K


Please feel free to post as many doubts on our discussion forum as you can.
If you find any question Difficult to understand - post it here and we will get you the answer and detailed
solution very  quickly.
We are all IITians and here to help you in your IIT JEE  & AIEEE preparation.

All the best.
Regards,
Askiitians Experts
Pramod Kumar
IITR Alumni

6 years ago
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