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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Animesh anand
this is the correct answer.the answer given in the book is wrong for the given data
but told to find for 1cm3 gas I think you found for different is it so
but data given for a is also written as atmcm^6 and b for cm^3 it means that it is given for 1cm^3