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    (Original post by Zym)
    what was the empirical formula for polypropene? and why is the alloy used rather then the metal ?
    Not sure on that one but i do know i did it as the previous one but i put in brackets and added n to represent the amount.
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    (Original post by Abdullah IGCSE)
    Not sure on that one but i do know i did it as the previous one but i put in brackets and added n to represent the amount.
    i did the same thing,and for the alloys i wrote that alloys are stronger and harder for the first point -although they were marked as separate points in w2015-and have higher MP and BP as a second point.
    after checking i found that my second one is wrong so i am praying that i will be awarded two marks for the first one
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    (Original post by Zym)
    what was the empirical formula for polypropene? and why is the alloy used rather then the metal ?
    no matter what the value of n is the empirical formula remains......same that is CH2
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    (Original post by laveeza)
    what was the answer for that transition metal question???mcq ......s only or q and s
    pretty sure it was Q and S
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    did anyone do 41/21? found it quite easy thank god
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    wohooooooooooooooooooo!!!!! i did that and whole of my class did s only ?!!! i convinced them about mercury being q as has iodide of red colour ??!!!!
    (Original post by LuvDaStudiezz)
    pretty sure it was Q and S
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    (Original post by LuvDaStudiezz)
    pretty sure it was Q and S
    which country are you from ??? and what was the answer of that first question in mcqs?!
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    (Original post by LuvDaStudiezz)
    pretty sure it was Q and S
    thats wrong lol..
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    (Original post by Abdullah IGCSE)
    thats wrong lol..
    dude clear it up !!!! mercury has its iodide that is red ,melts at -36 and conducts ................................ ..........its a transition element
    !!!
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    (Original post by Shaly)
    OK seems like I got it wrong
    The answer for stoichiometry was C5H10 the ratios were 2 5 10
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    (Original post by laveeza)
    dude clear it up !!!! mercury has its iodide that is red ,melts at -36 and conducts ................................ ..........its a transition element
    !!!
    Lazveeza talking about mcq paper 22 lol..
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    (Original post by Abdullah IGCSE)
    thats wrong lol..
    laugh out loud at this ..........
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    (Original post by Abdullah IGCSE)
    Lazveeza talking about mcq paper 22 lol..
    ok .ok .ok . ............i thought you were saying that the answer q nad s was wrong !!
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    (Original post by chemistry igcse)
    The answer for stoichiometry was C5H10 the ratios were 2 5 10
    yesh !!!!!!! absolutely ?!!!!
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    (Original post by chemistry igcse)
    The answer for stoichiometry was C5H10 the ratios were 2 5 10
    dude my bad actually 15 not 5
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    (Original post by laveeza)
    yesh !!!!!!! absolutely ?!!!!
    that was the only difficulty i had with the chem paper haha i did c5h10...
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    (Original post by laveeza)
    yesh !!!!!!! absolutely ?!!!!
    i think the grade boundaries laveeza on the mcq will be like 27ish or 28ish for an A since its the first time dividing mcqs into core and extended and this mcq was really hard compared to previous years but for theory i think i got 50ish to 60ish i think at min i got 55/80.For mcq in the high 20s maybe 27 or 29 and for alternative to practical a minimum of 49/60
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    give me a break abdullah it was the easiest !?!?!??!....................ther e were many things that were more difficuilt than that.........still i found that all easy and gooooooooood....ALHUMDULILAH
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    (Original post by Abdullah IGCSE)
    i think the grade boundaries laveeza on the mcq will be like 27ish or 28ish for an A since its the first time dividing mcqs into core and extended and this mcq was really hard compared to previous years but for theory i think i got 50ish to 60ish i think at min i got 55/80.For mcq in the high 20s maybe 27 or 29 and for alternative to practical a minimum of 49/60
    ok einstein .............yo bro i think sooo ??!?!?!
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    (Original post by laveeza)
    ok einstein .............yo bro i think sooo ??!?!?!
    laveeza did you take paper 22 ? i only had difficulty there come on admit it was hard compared to other mcq papers...
 
 
 
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