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Question

Temperature of an ideal gas is T K and average kinetic energy is E=2.07×1023 TJoule /molecule. Number of molecules in 1 litre gas at S.T.P. will be


A

 
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B


 
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C


 
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D


 
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Solution

The correct option is A
 
 As we know that at S.T.P. 22.4 litre of gas contains 6.023×1023  molecules
1 litre of gas contain 6.023×102322.4=2.68×1022  molecules.
 

Physics

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