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% Composition, Empirical Formulas, & Molecular Formulas

% Composition, Empirical Formulas, & Molecular Formulas

% Composition, Empirical Formulas, & Molecular Formulas. Chapter 9 sections 3 & 4. % Composition. % = (part / whole ) x 100 When calculating the % composition, you are calculating the % of each element in a compound. % Composition. Calculate the % Composition of MgO. Mg = 24.31g O = 16.00g

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279 views • 14 slides
Empirical and Molecular Formulas

Empirical and Molecular Formulas

Empirical and Molecular Formulas. Empirical Formula. If we are given an unknown substance how could we determine its chemical formula? We can determine its percent composition Then we can determine its empirical formula: the simplest whole-number ratio of atoms in a compound.

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328 views • 12 slides
Empiricial vs. Molecular Formulas

Empiricial vs. Molecular Formulas

Empiricial vs. Molecular Formulas. A molecule that contains the smallest whole number ratio of elements within the compounds CH 2 O The subscripts CANNOT be reduced. A molecule that shows the actual number of elements within the compound C 2 H 4 O 2 The subscripts CAN be reduced.

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133 views • 3 slides
Calculating Molecular Formula

Calculating Molecular Formula

Calculating Molecular Formula. Experimentally determined molar mass = n mass of empirical formula Molecular formula = (empirical formula) x n (This means all subscripts in the empirical formula must be multiplied by n to get the molecular formula.) Example: P. 349 (143)

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330 views • 1 slides

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