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kittykitty04

  • one year ago

Analysis of a 45.0g sample of water revealed a silver concentration of 47.1ppm. Assuming the solution has a density of 1.00g/mL. Calculate the molar concentration of the silver in the solution. (I am so lost with this question. Does it make sense to anyone?) help! :(

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  1. aaronq
    • one year ago
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    convert 47.1 ppm to grams then to moles... 1g of water = 1 mL then Molarity=moles/L of solution

  2. kittykitty04
    • one year ago
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    okay... how do i go from ppm to g? :S

  3. aaronq
    • one year ago
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    ppm=(g of silver/g of water) x 1,000,000

  4. aaronq
    • one year ago
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    oh wait sort i meant *g of solution at the bottom

  5. kittykitty04
    • one year ago
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    okay, so you're saying ppm = (g of water/ g of solution)?

  6. aaronq
    • one year ago
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    times a million, yes

  7. kittykitty04
    • one year ago
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    sorry, this question confuses me because it says "silver concentration of 47.1 ppm" in the beginning of the question and then it says "calculate the concentration of the lead in the solution" at the end. it totally messes with me! ah! :| So it says "assuming the solution has a density of 1.00g/mL" should I do ( 45.0g water/ 1.00 g/ml) = 45 mL? i'm so lost.

  8. kittykitty04
    • one year ago
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    x a million. lol

  9. kittykitty04
    • one year ago
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    wait. ugh, this is so frustrating. all that i just said that made no sense.

  10. aaronq
    • one year ago
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    haha oh i didn't even notice that.. it's probably a typo..

  11. aaronq
    • one year ago
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    47.1= (g of silver/45 mL )x1,000,000

  12. aaronq
    • one year ago
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    45 mL can from mass of water and density 1 g/ml= 45 g/V V= 45 mL

  13. aaronq
    • one year ago
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    45 came*

  14. kittykitty04
    • one year ago
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    alright. i think i got it, thanks aaron!

  15. aaronq
    • one year ago
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    (Y) good stuff !

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