Why are significant-figure rules only approximate?
Автор: Gumball Degree Lightning Chemistry
Загружено: 2025-12-21
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Описание:
Why Sig-Fig Rules Are Only Approximate
1. Use sig figs for quick precision
2. Multiply/divide: match fewest sig figs
3. Add/subtract: match decimal places
4. Rules are simple heuristics only
5. Use formal uncertainty for accuracy
Common Sig-Fig Mistakes to Avoid
1. Treating sig-fig result as true uncertainty
2. Not recalculating propagated errors
3. Rounding too early during calculations
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