If 1/6 in plane of 1/12 , mass of carbon atom is taken to be relative atomic mass unit, the mass of 1mol of a substance will?

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Solution

Dear Student,
If 1/6 is used in place of 1/12 mass of Carbon then the mass of 1 mol of substance will remain unaltered.
Since 1 mole = N_A $\times m a s s o f 1 a t o m$
when we use 1/6 th in place of 1/12 then 1 a.m.u=2 a.m,u
now the new Avogadro number N_A becomes $\frac{N_{A}}{2}$ since the atomic mass corresponding to it becomes 6 gm.
so 1 mole = $\frac{N_{A}}{2} \times 2 a . m . u$
Hence the mass remains unchanged.
Regards!

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