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Math Help - chemistry

  1. #1
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    Sep 2007
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    chemistry

    I can't solve that. But it is a homework from chemistry.

    We mix up water and sugar with analogy 4:1 correlatively, when result solution D, which has density 1.15 g/ml. Find:
    a. the amount of sugar, which is included in 500 g of solution D
    b. the contents % w/w and % w/v of solution D

    Please answer me soon.

    I hope you understand the problem.
    Last edited by gdespina; September 6th 2007 at 10:05 AM.
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  2. #2
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    Sep 2007
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    And another problem:

    Some amount NaCL separate in two equal parts. The first part is dissolved in water, therefore result 800 ml of solution D1 5% w/v. Find:
    a. What is the initial (the original, the starting) mass of NaCL ?
    b. In how much g of water must dissolve the second part of NaCL, therefore is shaped solution D2 with contests 10% w/w ?
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