Concept explainers
Cholesterol Heart disease is linked to high blood cholesterol levels. What is the percent composition of the elements in a molecule of cholesterol
Interpretation:
The percent composition of the elements in a molecule of cholesterol (
Concept introduction:
Empirical formula is the simplest formula of any organic or inorganic compound that represents the simple ratio of all atoms present in the molecule. The empirical and molecular formula can be used to calculate the mass percent of each element given in the formula. The mathematical expression for mass percent of element can be shown as:
Answer to Problem 166A
Explanation of Solution
Molecular formula =
Molar mass of C = 12.01 g/mol
Molar mass of H = 1.007 g/mol
Molar mass of O = 15.99 g/mol
Molar mass of
Calculate mass percent of each element:
Thus,
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Glencoe Chemistry: Matter and Change, Student Edition
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