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kittykitty04

  • 3 years 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
    • 3 years 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
    • 3 years ago
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    okay... how do i go from ppm to g? :S

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

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

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

  6. aaronq
    • 3 years ago
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    times a million, yes

  7. kittykitty04
    • 3 years 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
    • 3 years ago
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    x a million. lol

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

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

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

  12. aaronq
    • 3 years 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
    • 3 years ago
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    45 came*

  14. kittykitty04
    • 3 years ago
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    alright. i think i got it, thanks aaron!

  15. aaronq
    • 3 years ago
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    (Y) good stuff !

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