Question

If Avogadro number were changed from 6.022 x 10²³ to 6.022 x 10²⁰, this would change
(a) the ratio of chemical species to each other in a balanced equation
(b) the ratio of elements to each other in a compound
(c) the definition of mass in units of grams
(d) the mass of one mole of carbon

Answer 1

Answer ⇒ Option (d). The mass of the 1 mole of Carbon. 

Explanation ⇒
Mass of the 1 mole of C = 12 grams.

12 grams of the Carbon contains 6.022 × 10²³ atoms.
This means, 6.022 × 10²³ atoms of the Carbon weighs 12 grams. 
∴ 1 atoms of the C weighs 12/6.022 × 10²³ grams.
∴ 6.022 × 10²⁰ atoms of the C weighs (12 × 6.022 × 10²⁰)/(6.022 × 10²³)
 = 12 × 10⁻³
 = 0.012 g.

Thus, the mass of the 1 mole of the Carbon is changed. 

Hence, Option (d). is correct.

Hope it helps.

Answer 2

we know , the Mass of the 1 mole of carbon= 12g.

so, 12 grams of the Carbon contains 6.022 * 10²³ atoms.

and , 6.022 * 10²³ atoms of the Carbon weighs 12g.

so, 1 atoms of the Carbon weight = 12/6.022 * 10²³ grams.

6.022 * 10²⁰ atoms of the carbon weight = (12 * 6.022 × 10²⁰)/(6.022 * 10²³)
 
12 × 10⁻³
 
$\bold{\underline{0.012 g}}$.


so, the mass of the 1 mole of the Carbon is changed. hence, option (d)is correct