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  • May 30, 2012, 03:23 AM
    abhishek8
    Percentage composition
    4g mixture of NaCl & NaBr contains 30% Na in the total mixture.Calculate the percentage composition?
  • May 31, 2012, 03:18 AM
    Ask4material
    a, b = amt of (NaCl) and (NaBr)

    (NaCl) = mass of (NaCl) = 23+35
    (NaBr) = mass of (NaBr) = 23+70


    a(NaCl)+b(NaBr)=4

    (a+b)(Na)=4(30%)

    solve for a, b

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