Chemistry Chapters 9-11 - Balancing, Empirical and Molecular Formula, and Naming

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4 Terms

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Empirical Formula

the simplest whole number ratio of atoms present in a compound

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Molecular Formula

actual whole number ratio - tells us how much of each type of atom is present

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Steps for Empirical Formula

  • convert grams to moles by dividing by the amu of the element

  • identify which value is the smallest, then divide all values by that value

  • ensure whole numbers

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Steps for Molecular Formula

  • will be given the molar mass of a compound

  • find the molar mass of the empirical formula (subscript x amu +…)

  • Molar mass/molar mass of empirical compound

  • Multiply the empirical formula by the ratio obtained from above