a sample of oxygen contains 16 and o18 isotopes only with the percentage abundance respectively as 90% and 10%, how can the avg. number of neutrons per atom be 8.2?
( I need WRITTEN SOLUTION OR REASON)
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in o18 ,18-10
in o16,16-8
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the solution does not result into 8.2, it gives 8 which is not the answer
calculation
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Answer:
Percentage abundance of O16 = 90%
Percentage abundance of O18 = 10%
Average atomic mass of O = 16*90/100+18*10/100
Explanation:
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