Calculating Molecular Formulas

Calculating Molecular Formulas - compound’s molecular...

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Calculating Molecular Formulas - Remember that the empirical formula contains the lowest possible whole numbers that describe the atomic ratio. - The molecular formula is the ____________________formula of the molecular compound. - An empirical formula may or may not be a correct molecular formula. The molecular formula of a compound is either the same as its empirical formula, or it is some whole- number multiply of it. X = Molar Mass Empirical formula mass Example 1 : The empirical formula of a compound of phosphorus and oxygen was found to be P 2 O 5 . Experimentation shows that the molar mass of this compound is 283.89g/mol. What is the

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Unformatted text preview: compound’s molecular formula? Example 2 : What is the molecular formula of a compound that has an empirical formula of C 2 H 4 O and a molar mass of 176 g/mol? Stoichiometry: Mole to Mole Conversions Gi ven mol B mol A Example 1 : How many moles of aluminum can be produced from 13 moles of aluminum oxide? 2 Al 2 O 3 4Al + 3O 2 Mole ratio = Use Coefficients A = __________ B = __________ Example 2 : How many moles of carbon dioxide are produced when 4 moles of propane (C 3 H 8 ) react with excess oxygen gas? C 3 H 8 + 5O 2 3CO 2 + 4H 2 O A = __________ B = __________...
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Calculating Molecular Formulas - compound’s molecular...

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