If we consider that `1//6`, in place of `1//12`, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will.

Options

A. Decrease twice
B. Increase two fold
C. Remain unchanged
D. Be a function of the molecular mass of the substance

Answer

C

Explanation

This is because when you consider 1/6 in place of 1/12 since mass of carbon atom still the same
new amu.= 2amu
where, amu `rArr` new amu
and amu `rArr` old amu
`N_(A)^(.)` becomes half `(N_(A)//2)` since the weight of carbon corresponding to atomic weight becomes 6g in place of 12.
Where, `N_(A)^(.)` = New Avogadro’s numbers And `N_A` = Old Avogadro’s numbers.
As we know that,
Mass of one mole of substance = `N_(A) xx "amu"`
`therefore` New atomic mass
`rArr N_(A)^(.) xx "amu"^(.) = (N_(A)//2) xx 2` amu
`= N_(A) xx` amu = old atomic wt.