Question

The average mass of one atom of gold is $3.2707\times {10}^{-22}$ g. The molar mass of gold is:

• A.
• B.
  
• C.
  
• D. cannot caluculate
  

Answer 1

The correct option is B


molar mass of gold = mass of one atom of gold $\times$ $N_A$ = $3.2707\times {10}^{-22}\times 6.022\times {10}^{23}=196.99=197$g