Find the number of atoms of sodium in 2 moles.

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Explanation: 

To find the number of atoms in the given moles of the element follow the following steps:

Step 1 : Use the avogadro number to convert the moles to atoms.We know that 1 mole of any atom ,compound,formula unit has 6.02 x 1023 atom,compound or formula unit .In the problem given here there are there are 2 moles of S atom .

1 mole of S atom = 6.02 x 1023 atoms of S

Step 2 : How many atoms will be in 3.44 moles of S .Use the formula

Given x conversion factor

(given is the condition given in the problem and A conversion factor is a ratio (or fraction) which represents the relationship between two different units) .

2 moles of S x 6 .02 x 1023 atoms of S  / 1 mole of S atoms = 12.04  x 10 23  atoms of S

Answer: 

12.04  x 10 23  atoms of S