Final answer:
The number of moles of oxygen atoms for each compound is found by multiplying the given moles of the compound by the number of oxygen atoms in its formula: 10.22 moles for H₂O₂, 2.05 moles for N₂O, 6.51×10⁻² moles for H₂CO₃, and 48.4 moles for CO₂.
Step-by-step explanation:
To determine the number of moles of oxygen atoms in the given compounds, we must consider the molecular formula of each to know how many oxygen atoms are present per molecule, and then multiply that number by the number of moles given. Here are the calculations:
- A. 5.11 mol H₂O₂ - Each molecule of hydrogen peroxide (H₂O₂) has two oxygen atoms. Thus, 5.11 moles of H₂O₂ contain 5.11 moles × 2 = 10.22 moles of oxygen atoms.
- B. 2.05 mol N₂O - Each molecule of nitrous oxide (N₂O) has one oxygen atom. Therefore, 2.05 moles of N₂O contain 2.05 moles × 1 = 2.05 moles of oxygen atoms.
- C. 2.17×10⁻² mol H₂CO₃ - Each molecule of carbonic acid (H₂CO₃) has three oxygen atoms. As a result, 2.17×10⁻² moles of H₂CO₃ have 2.17×10⁻² moles × 3 = 6.51×10⁻² moles of oxygen atoms.
- D. 24.2 mol CO₂ - Each molecule of carbon dioxide (CO₂) contains two oxygen atoms. Hence, 24.2 moles of CO₂ consist of 24.2 moles × 2 = 48.4 moles of oxygen atoms.