Question

Cl have 2 isotopes of atomic mass units 34.97u and 36.97u. The relative abundance are 0.735 and 0.245.find average atomic mass of Cl.
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Answer 1

Answer:

Explanation

average atomic mass = 34.97×0.735+36.97×0.245/0.735+0.245

average atomic mass = 25.70295+9.05765/0.98

average atomic mass = 34.7606/0.98

average atomic mass = 91.47 (approx).