Question

If avogadro number $N_A$, is changed from ${6.022 \times 10^{23} \, mol^{-1} }$ to ${6.022 \times 10^{20} \, mol^{-1} }$ , 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: (D)

the mass of one mole of carbon

Answer 2

Q mass of 1 mol (6.022 × 1023 atoms) of carbon = 12g
If Avogadro Number (NA) is changed
than mass of 1 mol (${6.022 \times 10^{20}}$ atom) of carbon.
$= \frac{12 \times 6.022 \times 10^{20}}{6.022 \times 10^{23}} = 12 \times 10^{-3} g$
Therefore the mass of 1 mol of carbon is changed