the number of atoms present in one millimole of methane gas is–
(A)5×6.023×10^20
(B)6.023×10^23
(C)6.023×10^20
(D)2×6.023×10^20
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One mole of methane specifies NA , Avogadro's number of methane molecules, i.e. 6.022×1023 individual CH4 molecules. And thus it contains 4×6.022×1023 hydrogen atom
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