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A few chemistry questions that im stuck on, I appreciate all help :) watch

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    I didnt get taught this in class yet i was set this homework today and due for tomorrow so im really lost.

    Question 1:

    One of the alkanes in paraffin that is cracked is C12H26. Write a symbol equation, with state symbols to show the cracking reactions.

    Can somebody explain that to me? Or simply just tell me what the formula for paraffin is? I can take it from there

    Question 2:
    Write four uses for alkanes:
    -
    -
    -
    -

    I dont know any

    I got a C on my year 10 science, and retook to get an A. Now that i've started year 11, I want to aim for an A* so i ask every question I get stuck on.

    Thx guys, much appreciated
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    1. c12h26 - c2h4 + c10h22

    2. uses for alkanes - diesel/petrol production, making waxes, jet fuel, starting block for alkenes. cant think of much else
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    This website's pretty useful:

    http://www.bbc.co.uk/dna/h2g2/A834527

    Think it answers both your questions as well as lots of other things on similar topics.
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    Thanks guys..

    Bean can u tell me how u got Q1 ?

    (site was helpful too btw =D)
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    yeah next time try google first... or wiki

    something basic like alkanes or any gcse stuff with have tons of info online. then come to the forum if you still dont understand
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    Ah its ok, I understand now.. Laens site gave me the info I needed =]
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    (Original post by abderraouf)
    Thanks guys..

    Bean can u tell me how u got Q1 ?

    (site was helpful too btw =D)
    well when you crack you turn an alkane (n carbon, 2n+2 hydrogen) into an alkene (n carbon, 2n hydrogen) and a shorter chain alkane. its hard to explain over the internet but its very simple. i suggest you refer to teachers/text books

    example. C10H22 (an alkane) can be cracked to C2H4 (alkene) + C8H18 (smaller alkane). just make sure you have the same number of carbons and hydrogens on each side
 
 
 
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