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    can ne 1 tell me how to work out average percentage change in mass 4 osmosis in potatoes coursework??

    plz help.needs to b dun 4 2moz
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    (Original post by tinkabell)
    can ne 1 tell me how to work out average percentage change in mass 4 osmosis in potatoes coursework??

    plz help.needs to b dun 4 2moz

    use differentiation....lol or u could just work out the mean :-p
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    First, find the average change for each concentration (add up and divide by number of tries). Then work out the percentage change for the average:

    Change in mass (biggest minus smallest) divided by the original mass, then multiply by 100.

    Jo xx
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    (Original post by tinkabell)
    can ne 1 tell me how to work out average percentage change in mass 4 osmosis in potatoes coursework??

    plz help.needs to b dun 4 2moz
    if it needs to be done for 2moro why did you not do it earlier?
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    Maybe she's like me and better at procrastination than biology
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    ok
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    THNXZ!! xoxox wats procrastination??lol
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    To delay or postpone action - putting something off until the last minute!
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    i cant do it!! can u do the 1st 1 4 me plz so i can c???
    Concentration
    (M)

    1
    1
    [CENTER]INITIAL
    Mass (g)
    1.31
    1.36
    [/FINAL
    Mass (g)
    -0.555
    -0.521
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    (Original post by JuniperBlue)
    To delay or postpone action - putting something off until the last minute!
    From the Latin 'cras', meaning tomorrow.
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    (Original post by tinkabell)
    i cant do it!! can u do the 1st 1 4 me plz so i can c???
    Concentration
    (M)

    1
    1
    [CENTER]INITIAL
    Mass (g)
    1.31
    1.36
    [/FINAL
    Mass (g)
    -0.555
    -0.521
    I'm not sure why the final masses have minuses, but I'll ignore those:

    Average original mass:
    1.31 + 1.36 = 2.67
    2.67 divided by 2 = 1.335

    Average end mass:
    0.555 + 0.521 = 1.076
    1.076 divided by 2 = 0.538

    1.335 - 0.538 = 0.797

    0.797 (change) divided by 1.335 (original) = 0.597

    0.597 x 100 = average of 59.7% change

    Hope this isn't too confusing!
 
 
 
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