How we can calculate the atomic mass of chlorine element????

Asked by  | 12th Apr, 2013, 11:17: AM

Expert Answer:

chlorine consists of 75% chlorine-35 and 25% chlorine-37.

Think of the data based on 100 atoms, so 75 have a mass of 35 and 25 atoms have a mass of 37. 
 
The average mass = [ (75 x 35) + (25 x 37) ] / 100 = 35.5
So the relative atomic mass of chlorine is 35.5 or Ar(Cl) = 35.5

Answered by  | 14th Apr, 2013, 10:20: AM

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