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5 Cards in this Set
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Percent Composition |
The percent by mass of each element in a compound |
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How to: Calculate the percent composition of an unknown compound (numbers not name) |
% mass = grams of element/grams of compound x 100 |
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How to: Calculate the percent composition of a known compound(name) |
% mass = grams of element in 1 mole of compound/ molar mass of compound x 100 |
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How to: Calculate molecular formulas |
Step1: Calculate Empirical Formula Mass Step2: Divide molar mass by Empirical Formula Mass |
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How to: Empirical Formula |
Step1: Change presents to grams Step2: Change grams to moles Step3: Divide to make numbers whole Step4: Multiply to make numbers whole Step5: Round |
