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    Hey, I'm doing the Evaluative task soon and therefore want to get as much practice as I possibly can. I've tried to do the following questions and really don't understand what to do :confused:

    http://www.ocr.org.uk/download/asses...23_ev_task.pdf

    Question 1d:
    Show by calculation, the volume of CO2 is > 64
    *Use the formula n=V/24 but what are the values?

    Question 2bi
    How do you calculate the percentage error in this situation cuz I realy don't understand what it's telling me
 
 
 
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