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Please help with Physical Science 2!! Confused!

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Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?)

Grams NaCl Moles NaCl # Molecules NaCl
175.32 ? ?
? 0.333 ?
? ? 6.02x10^23

  • Please help with Physical Science 2!! Confused! - ,

    NaCl is 23 + 35.5 = 58.5 grams / mol
    so
    175.32 grams + 1 mol/58.5 grams = 3 moles of NaCl
    and
    3 moles * 6*10^23 molecules/mole = 1.8*10^24 molecules

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