Find chemical formulas {chemical formula} {formula, chemistry} using percent composition. For each element, divide percent composition by atomic mass units, to find number of elements per molecular weight. Then divide smallest number into others. If all answers are close to whole numbers, use whole numbers as subscripts in chemical formula. If answers are not all whole numbers, multiply answers by two, then three, then four, and so on, until answers are whole numbers. Then use whole numbers as subscripts in chemical formula.
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Date Modified: 2022.0224