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Pratik Somani Grade: 12

This is in context to my previous question-"how many degrees of freedom are associated with 2 g helium?" Actually this question was asked in our school examination,to which most of us answered as "3".But our teachers say that it would be 0.5*4*6.022*10^23..................shouldnt degrees of freedom be independent of mass???

7 years ago

Answers : (1)

Gokul Joshi AskiitiansExpert-IITK
42 Points

Dear Pratik, 

Degrees of freedom is in how many different ways an object can move around. For a monoatomic He atom your answer of 3 is correct, but for 2g of Helium it is not. All the atoms of He in the sample are free to move in 3 different ways. In total the whole sample can "move" in 3*0.5 mol ways. So the correct answer should be 3*0.5*6.023*1023.

Please feel free to post as many doubts on our discussion forum as you can.we will get you the answer and detailed  solution very  quickly.
All the best.Regards,

Askiitians Experts
Gokul  Joshi

7 years ago
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