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Chemistry: Post your doubts here!

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I was really good in chem in olevels.Even in A levels now... but I dont know why I just don;'t have a liking for the chem mcs.
bio mcs were intresting needed some thinking.chem is just you know or you don't know thingy
 
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In 38:
1 the sum of the Mr in the monomer is 62.5 so the Mr of the polymer will be the multiples of 62.5
2just make a displayed formula you will observe that there is only one chiral per monomer in the polymer
3 there will be 7 sigma bonds not 5 as the carbon atoms in each monomer will make a sigma bond with the carbon atom of the next monomer

In 26 only in option D will there be a single C=C, between the carbon of OH group and carbon of the ring attached to it
 
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