To determine how many moles of oxygen are in each substance:

• 0.55 mol of C₆H₁₂O₆ x 6 moles of oxygen / mole of C₆H₁₂O₆ = 3.3 moles of oxygen in 100 g of C₆H₁₂O₆
• 2.27 mol of CO₂ x 2 moles of oxygen / mole of CO₂ = 4.54 moles of oxygen in 100 g of CO₂
• Therefore, CO₂ has more carbon atoms than C₆H₁₂O₆ in 100 g of each sample

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