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The molecular weight of water (H₂O) is approximately 18.02 g/mol. This is calculated by adding the atomic weights of its constituent elements: hydrogen (H) has an atomic weight of about 1.01 g/mol, and oxygen (O) has an atomic weight of about 16.00 g/mol. Since there are two hydrogen atoms and one oxygen atom in a water molecule, the calculation is (2 × 1.01) + (1 × 16.00) = 18.02 g/mol.

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23h ago

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