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    hey guys
    i was making notes of rates of reaction from my textbook and everything was good until i saw this in the textbook:
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    hope you can see the picture, but from experiments 2 to 3 in the textbook it says that the rate doubles. Either I'm missing something really obvious or I'm terrible at maths, but how does 6.40 x 10-8 double to 1.28 x 10-7?
    Any help would be appreciated as I'm finding rates hard enough already
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    It's not comparing experiments 2 and 3. it is comparing experiments 1 and 2 and as you can see in the table the rate doubles from 1 to 2.
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    That’s comparing experiment one too experiment two, 2(3.20 x10-8)=6.4 x10-8.
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    Thanks for the help guys but no, the text book say (I'll even quote it):
    "Comparing experiments 2 and 3:
    O3 doubles and NO2 stays the same
    the rate also doubles
    the reaction is 1st order with respect to O3"

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    Think you've posted the wrong picture then or are just trolling
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    No, experiments one and two are to the power of -8, experiment three is too the power of -7, the figure for experiment two doubled is that of experiment three.
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    It might make more sense if you convert them into decimals rather than standard form, 6.4x10-8 multiplied by two is 1.28x10-7.
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    not trolling, @LawBr you're right thank you!!!
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    Think 2 and 3 double as well? crap at scientific notation though
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