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Math Help - Chemistry Stuff...

  1. #1
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    Chemistry Stuff...

    I don't know whether chem. stuff is for this forum, but it is urgent.

    I need the answers for the following questions to check mine against (don't bother to include solutions).

    4. Commercial sulphuric acid contains 98.0% H2SO4 by mass and has a density of 1.84g mL-1. Calculate the concentration in mol L-1 of the solution.


    6. 150mL of a 1.01 Mol L-1 KCl solution had 11.7g of NaCl dissolved in it. Calculate the new concentration in mol L-1 of the chloride ion. Assume no volume change.
    And i did post this in the highschool mat help, but it has since become urgent...
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  2. #2
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    Quote Originally Posted by Undeadragons View Post
    I don't know whether chem. stuff is for this forum, but it is urgent.

    I need the answers for the following questions to check mine against (don't bother to include solutions).

    4. Commercial sulphuric acid contains 98.0% H2SO4 by mass and has a density of 1.84g mL-1. Calculate the concentration in mol L-1 of the solution.
    (snort) If I get it right...
    I get 8.4 M H_2SO_4

    Quote Originally Posted by Undeadragons View Post
    6. 150mL of a 1.01 Mol L-1 KCl solution had 11.7g of NaCl dissolved in it. Calculate the new concentration in mol L-1 of the chloride ion. Assume no volume change.
    And i did post this in the highschool mat help, but it has since become urgent...
    I really really hope this isn't a double post...
    I get 3.21 mol Cl/L

    -Dan
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