Question

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

Answer 1

Answer:
`21.1* 10^(23)` atoms in 3.50 mol of sulfur.

Step-by-step explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
`6.023* 10^(23)` of particles.

1 mole of sulfur
`(S)` contains=
`6.022* 10^(23)` atoms

Thus 3.50 moles of sulfur
`(S)` contains=
`(6.022* 10^(23))/(1)* 3.50= 21.1* 10^(23)` atoms

Thus there are
`21.1* 10^(23)` atoms in 3.50 mol of sulfur.

Answer 2

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.