If Avogadro number $N_{A},$ is changed from 6.022 × $10^{23} {mol}^{- 1}$ to 6.022 × $10^{20} {mol}^{- 1}$ , this would change

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the ratio of chemical species to each other in a balanced equation

the ratio of elements to each other in a compound

the definition of mass in units of grams.

the mass of one mole of carbon

answer is A.

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Detailed Solution

Mass of 1 mol $(6.022 \times 10^{23} atoms)$ of carbon

If Avogadro number is changed to $6.022 \times 10^{20}$ atoms then

Mass of 1 mol of carbon $= \frac{12 \times 6.022 \times 10^{20}}{6.022 \times 10^{23}} = 12 \times 10^{- 3} g$

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