Question

calculate number of moles in 16u of oxygen atom
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Answer 1

Answer:

what do you mean by 16 units?

Actually if we have 16 grams of Oxygen then we say one mole of oxygen. Because when the atomic mass, molecular mass or formula mass of a substance taken in gram, then it is said to be one mole. In case of oxygen the atomic mass is 16, so if we take it into grams 16 g then it is said to be one mole.