Verified Answer :

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: \(21.1\times 10^{23}\)  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.

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