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Lena772

  • one year ago

Determine the Molarity (M, moles solute / Liter of solution) of a solution formed when 2.134E-3 kg Aluminum chloride is dissolved in water such that the final volume of the solution is 0.4356 kL.

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  1. Lena772
    • one year ago
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    I know how to find Molarity but I'm not sure where the final volume comes in in the equation. Help? Thanks. :)

  2. Lena772
    • one year ago
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    @Preetha @chmvijay

  3. Lena772
    • one year ago
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    @mathstudent55 @Abhisar @Nnesha

  4. cuanchi
    • one year ago
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    Molarity is equal to moles of solute per liter of solution. The problem is giving you a mass of Aluminum chloride in kg, this is the solute of your solution. You have to calculate how many moles of Aluminum chloride are in 2.134E-3 kg Aluminum chloride. You will need the molecular mas of Aluminum chloride. Then divide this value by the volume of your solution (0.4356 kL) converted in liters. That will be the molarity of the solution

  5. cuanchi
    • one year ago
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    did you got the answer? what value did you get?

  6. Lena772
    • one year ago
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    Ok I did (2134g AlCl3*1 mol AlCl3)/133.3405gAlCl3 = 16.004molAlCl3. I'm confused to where I go from here.

  7. Lena772
    • one year ago
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    Would it be 16.004molAlCl3/435.6L = 0.03674 mol/L

  8. Lena772
    • one year ago
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    @Cuanchi

  9. Lena772
    • one year ago
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    Is my answer right? @dan815 @TheSmartOne @Nnesha @Luigi0210 @whpalmer4 @compassionate @abb0t @mathmate @KyanTheDoodle

  10. cuanchi
    • one year ago
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    the procedure is correct the only problem that I see is the conversion from kg to g 2.134E-3 kg = 2.134 g

  11. TheSmartOne
    • one year ago
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    I'm not that good in Chemistry, unfortunately ;-; @JoannaBlackwelder @chmvijay @Abhisar @matt101 @Australopithecus @alphadxg can assist you better in chem :)

  12. Lena772
    • one year ago
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    @Cuanchi (2.134 g AlCl3 * 1 mol AlCl3) / 133.3405 g AlCl3 = 0.016004 mol AlCl3 0.016004 mol AlCl3/ 435.6 L AlCl3 = 0.00003674 mol/L

  13. cuanchi
    • one year ago
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    I got the same answer

  14. cuanchi
    • one year ago
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    3.67 x 10 ^(-5)

  15. mathmate
    • one year ago
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    @Lena772 Just a guess, can you check if the volume of solution is 0.4536kL or 0.4356kL?

  16. Lena772
    • one year ago
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    It's 0.4356 @mathmate!

  17. mathmate
    • one year ago
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    Thank you, your calculation remains perfect! :)

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