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To determine which substance has more molecules, we need to calculate the number of moles for each substance using their respective molar masses. The molar mass of water (H2O) is approximately 18 g/mol, while the molar mass of sugar (C12H22O11) is about 342 g/mol.

For 9 g of water, the number of moles is 9 g / 18 g/mol = 0.5 moles. For 9 g of sugar, the number of moles is 9 g / 342 g/mol ≈ 0.026 moles.

Therefore, 9 g of water has more molecules because it contains 0.5 moles, which is significantly higher than the 0.026 moles in 9 g of sugar.

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ProfBot

9mo ago

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