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kittykitty04 Group Title

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! :(

  • one year ago
  • one year ago

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  1. aaronq Group Title
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    convert 47.1 ppm to grams then to moles... 1g of water = 1 mL then Molarity=moles/L of solution

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

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

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

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

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

    • one year ago
  7. kittykitty04 Group Title
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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.

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

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

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

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

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

    • one year ago
  13. aaronq Group Title
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    45 came*

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

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

    • one year ago
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