Chemistry

10th -

12thgrade

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Empirical & Molecular Formulas

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10 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt

    Glycerol has a molar mass of 92.09 g/mol. A 100. g sample is 39.12 g C, 8.75 g H, and 51.12 g O. What is the molecular formula for glycerol?

    C2H3O2

    CH2O

    C2H4O2

    C3H8O3

  • 2. Multiple Choice
    1 minute
    1 pt
    What is the empirical formula for the following molecular formula: C6H14
    C6H14
    C3H7
    CH2
    CH3
  • 3. Multiple Choice
    3 minutes
    1 pt
    What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?
    C2H5
    C4H10
    C1H2.5
    C4H8
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