Question

Calculate the atomic mass (average) of chlorine using the following data: %Natural Abundance Molar Mass Cl35 75.77 34.9689 Cl37 24.23 36.9659

Answer 1

Answer: 35.4527

Explanation:

35Cl = 0.7577 and Molar mass = 34.9689

     37Cl = 0.2423 and Molar mass = 36.9659

     ∴ Average Atomic mass = (0.7577x34.9689)amu + (0.2423x36.9659)  

                                             = 26.4959 + 8.9568 = 35.4527