Empirical formula from mass or mass % (Convert mass % to moles; divide by smallest mole amount to get atom ratio)
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Convert mass % to moles; divide by smallest mole amount to get atom ratio
What each symbol means
| Symbol | What it stands for |
|---|---|
| A_i | Atomic mass |
| m_i | Mass of element i in sample |
| ratio | Divide all n_i by min(n_i) to reach integers |
When to use this
Pure compound; ratios are smallest whole numbers (within experimental error).