Calculate the gram molecular weight of N2 molecule if weight of its one molecule is 28 amu.
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answer is 28.
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Detailed Solution
Wt of 1 amu = 1.66 x 10-24 g. wt. of one nitrogen molecule = 28 amu =28×1.66×10−24g ∴ wt. of Avogadro no.(= 6.023 x 1023) of N2 molecules =28×1.66×10−24g×6.023×1023=28g∴ g. mol. wt. of N2 = 28 g. Ans.