1.

95. If we consider that, in place of 1, mass of carbon atom is taken to be relative atomic mass unit, the mass of onemole of a substance wilA) incease two foldB) decreases twiceC) be a function of molecular mass of the substanceD) remain unchanged

Answer»

IN CASE OF1/12

1/12 mass of a carbon 12 atom is 1 a.m.u

1 a.m.u = 1/12 * 1.99e-23gm = 1.66e-24 gm

Suppose, the substance you are talking about is NITROGEN

mass of 1 nitrogen atom = 14 a.m.u

mass of 1 mole of nitrogen atom = 6.023e23*14*1.66e-24 = 14 gm

IN CASE OF1/6

1/6 mass of a carbon 12 atom will be 1 a.m.u

1 a.m.u = 1/6 * 1.99e-23gm = 3.31e-24 gm

Then,mass of 1 mole of nitrogen atom having 14 a.m.u will be 6.023e23*14*3.31e-24 = 28 gm

NOW......28gm/14gm = 2..........SO,the mass of one mole of the substance will be 2 times of initial.

what is atomic mass unit to in the relation A+B-AB2



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