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    (Original post by Farmerjj)
    The complete combustion of 0.0117mol of X produces 2.00x10^-3 m^3 of carbon dioxide gas, measured at 24.0 degrees and 101kPa.Determine the molecular formula of X.
    I'm really not sure how to tackle this question.
    Thanks
    Hi, could you pls post ur workings for this question please
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    I tried this question and this is my workings so farName:  image.jpg
Views: 111
Size:  382.6 KB can someone tell me how to get the final answer please
    Thanks
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    (Original post by Exotic-L)
    I tried this question and this is my workings so farName:  image.jpg
Views: 111
Size:  382.6 KB can someone tell me how to get the final answer please
    Thanks
    All your workings are ok. You can see the ratio of X to CO2 is 1 to 7. You'd need an alkane with 7 carbons to make 7 mol of CO2 so final answer is C7H16.
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    (Original post by TeachChemistry)
    All your workings are ok. You can see the ratio of X to CO2 is 1 to 7. You'd need an alkane with 7 carbons to make 7 mol of CO2 so final answer is C7H16.
    Ahh right I see. Thank you!!
 
 
 
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