1. Calculate the Molar Mass:
* Water (H₂O):
* H: 1.01 g/mol x 2 = 2.02 g/mol
* O: 16.00 g/mol
* Total: 2.02 + 16.00 = 18.02 g/mol
* Sugar (C₁₂H₂₂O₁₁):
* C: 12.01 g/mol x 12 = 144.12 g/mol
* H: 1.01 g/mol x 22 = 22.22 g/mol
* O: 16.00 g/mol x 11 = 176.00 g/mol
* Total: 144.12 + 22.22 + 176.00 = 342.34 g/mol
2. Calculate the Number of Moles:
* Water: 9 g / 18.02 g/mol = 0.5 mol
* Sugar: 9 g / 342.34 g/mol = 0.026 mol (approximately)
3. Apply Avogadro's Number:
* Avogadro's Number states that there are 6.022 x 10²³ molecules in one mole of any substance.
* Water: 0.5 mol x 6.022 x 10²³ molecules/mol = 3.011 x 10²³ molecules
* Sugar: 0.026 mol x 6.022 x 10²³ molecules/mol = 1.57 x 10²² molecules (approximately)
Conclusion:
9 g of water has more molecules than 9 g of sugar.