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    Hi, my problem with this question is that my answer for part c is 12.8 g (1 d.p) which can't be right. I've checked through my working several times and can't see the error.
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    post the same thing here you'll get help pretty quick

    http://www.thestudentroom.co.uk/show....php?t=3470381
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    (Original post by pineneedles)
    Hi, my problem with this question is that my answer for part c is 12.8 g (1 d.p) which can't be right. I've checked through my working several times and can't see the error.
    you missed out the negative in front of k.... at the end
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    (Original post by the bear)
    you missed out the negative in front of k.... at the end
    It might be the quality of the picture, but I've definitely put negatives in front of every k, and that's was I put into my calculator.

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    (Original post by pineneedles)
    It might be the quality of the picture, but I've definitely put negatives in front of every k, and that's was I put into my calculator.

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    i mean when you put your value of k in the exponent you did not put the original negative sign back in
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    (Original post by the bear)
    i mean when you put your value of k in the exponent you did not put the original negative sign back in
    Oh, oh right I see it now, thanks. I got 7.84g this time

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    (Original post by pineneedles)
    Oh, oh right I see it now, thanks. I got 7.34g this time

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    :girl::rave::girl:

    :girl::rave::girl:

    :girl::rave::girl:
 
 
 
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