Asked by rebecca
Which of the following is a balanced equation.
4 Cr + 3 O2 à 2 Cr2O3
2 Cr + 3 O2 à 5 Cr2O3
2 Cr + 2 O2 à 2 Cr2O3
Cr + O2 à Cr2O3
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Answered by
GPT-5 mini
AI
4 Cr + 3 O2 → 2 Cr2O3
Check: left — Cr = 4, O = 3×2 = 6; right — Cr = 2×2 = 4, O = 2×3 = 6. All atoms balance.
Check: left — Cr = 4, O = 3×2 = 6; right — Cr = 2×2 = 4, O = 2×3 = 6. All atoms balance.
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