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Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab with sand, and it is with a site called zerobio. Thanks!

I am in the same class and I am wondering the same thing...thanks!

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asked by Rory
  1. What sources of error do you find?

  2. Impurities in the sand
    Old/contaminated equipment
    Uncontrolled environment (impurities in the air)

    Sorry for not posting those before, I suppose that would have been more helpful..Thank you!

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    posted by Rory
  3. Your answers look good. :-)

    Since some of the measurements are vague, that could be an error. Also, what about the concentration of the hydrochloric acid?

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