Question

142 amu of chlorine would contain

1) 4 atoms
2) 35.5 g
3) 5041 atoms
4) 142 atoms
5) 4 grams

Answer 1

Answer: There are four atoms

Explanation:  mass of Cl atom is 35.45 amu

Amount of atoms n = m/M = 142  / 35.45 = 4