Snyder.Guided Notes - Quantitative Analysis of...

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Copyright © 2018 Edmentum Inc. All Rights Reserved.Quantitative Analysis of Compounds Glossary TERMDEFINITION empirical formula a chemical formula in which the subscripts represent the relative quantity of each element as the smallest whole-number ratio of atoms oxidation state percent composition Objective In this lesson, you will _______________________________________________________________________. Percent Composition There are several ways we can express the _______________ of items in a mixture: ____________________________percentage of total volume ____________________________ Percent Composition from a Chemical Formula The percent composition is different from the _______________ that would be determined by counting items in a mixture. What is the percent composition of calcium in calcium chloride (CaCl2 )? Find the total molar mass of CaCl2 : 1 × ________________gramsmole+_____ × 35.45gramsmole= ________________ grams mole Divide the molar mass of Ca by the total molar mass of CaCl2 : grams mole110.978 gramsmole = ________________ Convert the decimal value toa percentage: ________________ × 100% = ________________% The percent composition of calcium is _______________%.
Copyright © 2018 Edmentum Inc. All Rights Reserved.Percent Composition from Laboratory Data By weighing an _______________ compound and the resulting _______________, we can calculate the percent composition of the _______________ compound. For example, if we melt 16.6 grams of malachite to
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