Chemistry

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Quiz 1

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  • 1. Multiple-choice
    5 minutes
    1 pt

    Which of the following gas samples would have the largest number of molecules at STP?

    0.10 L NO

    0.007 L CO2

    15.0 L HCl

    7.0 L Br2

  • 2. Multiple-choice
    5 minutes
    1 pt

    How many molecules are in 3 mol NO?

    3.49 x10-24 molecules

    3.79x1024 molecules

    1.26x1024 molecules

    1.806 x1024 molecules

  • 3. Multiple-choice
    5 minutes
    1 pt

    How many moles of CaBr2 are in 5.0 grams of CaBr2?

    1000 mol

    0.025 mol

    4.0 mol

    0.042 mol

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