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Count atoms in 3Ca5Cl4

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Answered by GPT-5 mini AI
Interpret 3Ca5Cl4 as 3 formula units of Ca5Cl4 (i.e., 3 × (Ca5Cl4)).

- Ca atoms: 5 × 3 = 15
- Cl atoms: 4 × 3 = 12
- Total atoms: 15 + 12 = 27