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    (Original post by spidle)
    Think it was forward reaction exo and NO2 was brown?
    Empirical formula for the hydrocarbon?
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    Was it c3h8

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    (Original post by moshe015)
    What did people get for question 9, percentage mass of magnesium chloride of powder???

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    79%??
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    (Original post by RoughER)
    Empirical formula for the hydrocarbon?
    Was running out of time and guessed C5H12 lol.
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    (Original post by spidle)
    Think it was forward reaction exo and NO2 was brown?
    I said the forward was exo while the product on the right was colourless :/
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    Was one of the options ' forward reaction is endothermic and NO2 get colourless'?
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    How was the exam overall? Did you guys find it really hard or okay? Do you think the grade boundaries will be lower than 80%

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    Yes and that was the correct answer I'm not sure what other people are talking about
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    (Original post by Splaffie)
    Yes and that was the correct answer I'm not sure what other people are talking about
    What Q are you referring to?
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    Hard


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    clfl3 wen both group 7 and chlorine is one of the most reactive gases

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    help me make an unofficial mark scheme at http://www.thestudentroom.co.uk/show....php?t=4124645 I'll compile the answers estimate marks after
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    (Original post by RoughER)
    Empirical formula for the hydrocarbon?
    I got C3H8
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    There was nothing on energetics(I think), I assume there will be on paper 2!
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    (Original post by marcobruni98)
    There was nothing on energetics(I think), I assume there will be on paper 2!
    Energetic and collisions is in paper 2 anyways. It says on the specification

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    (Original post by spidle)
    Think it was forward reaction exo and NO2 was brown?
    I got exothermic and brown as well
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    (Original post by DaVinciGirl)
    Energetic and collisions is in paper 2 anyways. It says on the specification

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    Energetics is on both papers, they just didn't have any.

    Hopefully there will be less maths in paper 2 though...
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    (Original post by RoughER)
    Empirical formula for the hydrocarbon?
    C3H8 I think it was. Find total RFM (which is 44 here) then do RFM of C (so in this case 12 x 3 = 36) and divide 36 by 44 which gets 9/11 😊
    (P.S. I spent like 5 minutes trying to figure this out and only realised in the last minute of the test 😂)
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    Did anyone do the CHEM 1 resit?
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    I got ch3 for some reason
 
 
 
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