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Homework Help: BIO/CHEM help

  1. Sep 12, 2004 #1
    Please help me with this:

    Calculate how many grams of solute are necessary to prepare:
    1) 100 mL of 0.1 N (Normal Solution) Ca(OH)2 (molecular weight = 74)

    2) 100 mL 5% NaCl (molecular weight = 40)
     
  2. jcsd
  3. Sep 12, 2004 #2

    Tide

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    What have you tried so far and where are you getting stuck?
     
  4. Sep 12, 2004 #3
    I know how to find the solute of Molarity of solution, but I don't know how to find the grams of solute for Normal Solution. I've never done this type of question, and I can't find the formula to find it.

    As for question 2, I I know that a solution is 1% when it contains 1 gram of solute per 100 mL of solution. The question is 100mL of 5% NaCl. Does that mean that there is 5 grams of solute? Is there a formula for solving this type of problems?
     
  5. Sep 12, 2004 #4

    Tide

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    A 0.1 Normal solution contains 0.1 moles of solute per liter of solution.
     
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