Question

How many sulfur atoms are there in 3.50 mol of sulfur?

Answer 1

To determine the number of atoms of a substance given its number of mols, multiply number of moles with the Avogadro's number which is approximately equal to 6.022x10^23. 

To answer the problem above, multiply 3.50 mols with 6.022x10^23. This gives a product of 2.1077x10^24.

Thus, there are 2.1077x10^24 atoms of sulfur in 3.50 mols of sulfur. 

Answer 2

Answer: $21.1\times 10^{23}$  atoms  in 3.50 mol of sulfur.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

1 mole of sulfur $(S)$ contains=$6.022\times 10^{23}$  atoms  

Thus 3.50 moles of sulfur $(S)$ contains=$\frac{6.022\times 10^{23}}{1}\times 3.50= 21.1\times 10^{23}$  atoms  

Thus there are $21.1\times 10^{23}$  atoms  in 3.50 mol of sulfur.