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    Hi all,

    I am undertaking the section 3 of my Chemistry coursework and I'm having problems writing the 'Uncertainty' section when calculating the percentage error of each step of my method.

    I have investigated 5 different temperatures (0,10,20,30,40 and the error uncertainty is +-0.5degrees), and therefore have to calculate the percentage error of the reading. However, it just doesn't make sense when I put the values into the formula: (error uncertainty/reading)*100.

    For example, when using 0degrees, I get (0.5/0)*100 which is impossible.

    Could anyone explaing to me how to work it out and/or work it out for me please?

    Thanks.
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    (Original post by Marseille013)
    Hi all,

    I am undertaking the section 3 of my Chemistry coursework and I'm having problems writing the 'Uncertainty' section when calculating the percentage error of each step of my method.

    I have investigated 5 different temperatures (0,10,20,30,40 and the error uncertainty is +-0.5degrees), and therefore have to calculate the percentage error of the reading. However, it just doesn't make sense when I put the values into the formula: (error uncertainty/reading)*100.

    For example, when using 0degrees, I get (0.5/0)*100 which is impossible.

    Could anyone explaing to me how to work it out and/or work it out for me please?

    Thanks.
    Do it in Kelvin not celcius
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    (Original post by langlitz)
    Do it in Kelvin not celcius
    But what would the error uncertainty be? Would it stay at +-0.5degrees or would it change, the latter option seems more logical but don't know about I would change that
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    (Original post by Marseille013)
    But what would the error uncertainty be? Would it stay at +-0.5degrees or would it change, the latter option seems more logical but don't know about I would change that
    The error does not change as the measurements/errors you made were always in kelvin really, you chose to express them as celcius. You should always use kelvin, it is the SI unit for temperature.


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