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Science

10th

grade

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Mole conversions/Percent Composition

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16 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    How many molecules are in 2.5 mol of NaCl?

    1.50 x1024 molecules

    1.50 molecules

    4.15 molecules

    1.51 x1024 molecules

  • 2. Multiple Choice
    5 minutes
    1 pt

    How many moles are in 19.82 g Mg?

    1.23 mol Mg

    481.70 mol Mg

    1.00 mol Mg

    0.82 mol Mg

  • 3. Multiple Choice
    5 minutes
    1 pt

    How many moles are in 3.01 x 1022 atoms of magnesium?

    0.05 moles

    1.81 x 1046 moles

    5.00 x 1021 moles

    5.00 moles

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