How many atoms are in 35.5 g of chlorine? a. 3 × 10^23 atoms b. 6.02 × 10^23 atoms c. 1.2 × 10^24 atoms d. 3 × 10^24 atoms (not d)

Option (B) is the correct answer.

Explanation:

According to Avogadro's number, one mole of a substance contains atoms or molecules.

As molar mass of chlorine is 35.5 g/mol. Hence, calculate its number of moles as follows.

                   No. of moles =

                                         =

                                         = 1 mol

Therefore, number of atoms present in 1.01 mol are calculated as follows.

                            atoms/mol

                              = atoms

Therefore, we can conclude that there are atoms in 35.5 g of chlorine.

the answer is d. 74.02