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Question
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
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Solution
Given:
Mass of 1 mole of oxygen = 16g
We know that 1 mole of oxygen contains 6.022 × 1023 oxygen atoms.
Mass of 6.022 × 1023 oxygen atoms = 16g
Mass of 1 oxygen atom = 16/6.022 × 1023
Hence, 1 atom of oxygen molecule weighs 2.65 × 10-23 grams.
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