Which of the following contains Avagadro number of atoms?

1.	Which of the following contains Avagadro number of atoms?
Answer» one mole of HELIUM GAS 22.4 Its of `CO_(2)` at STP 11.2 Its of HYDROGEN gas at STP 3.2 gms of methane Solution :One mole of helium (mono ATOMIC) contains Avogadro number of atoms 22.4 litres of `CO_(2)` at STP contains Avogadro number of molecules `(11.2)/(22.4)xx6.023xx10^(23)xx2` atom of hydrogen `(3.2)/(16)xx6.023xx10^(23)xx5` atoms

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