Percent Composition Notes and Practice

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Percent composition is the percent by mass of each element found in a compound. Example: What percent of iron (III) hydroxide, Fe(OH)3, is oxygen? Step 1: Find the molar mass of the compound. 1 mol Fe = 1 x 55.85 g/mol = 55.85 g/mol 3 mol O = 3 × 16.00 g/mol = 48.00 g/mol […]

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