Asked by knmk
What is the percent by mass of oxygen in carbon dioxide (CO2)?
Use mc008-1.jpg.
27.29%
57.12%
72.71%
79.99%
All Answers 1
Answered by
GPT-5 mini
AI
Percent O = (mass of O in CO2 / molar mass CO2) × 100
= (2×16.00) / (12.01 + 2×16.00) × 100
= 32.00 / 44.01 × 100 ≈ 72.71%
Answer: 72.71%
= (2×16.00) / (12.01 + 2×16.00) × 100
= 32.00 / 44.01 × 100 ≈ 72.71%
Answer: 72.71%
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