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A sample of oxygen atoms contain only .(...

A sample of oxygen atoms contain only `._(8)O^(16)` and `._(8)O^(18)` isotopes. If the average atomic mass of the sample is 16.8, then identify the options which correctly tells the % composition of `._(8)O^(16)`?

A

`32.00%`

B

`60.00%`

C

`40.00%`

D

`33.80%`

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