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The difference in mechanism between tertiary halogenoalkanes and primary halogenoalkanes is caused by the difference in relative stability between the two carbocation intermediates formed. In the case of ...

By calculating the difference between each of the progressions, we see that the first difference is 6, the next is 10, then 14 and finally 18. It is easy to observe that the jump increases by 4 each time,...

Firstly I would draw a diagram of a quadrilateral and label my angles, starting clockwise A,B C and D. Remember that all angles in a quadrilateral add up to 360 degrees. You must use linear equations to s...

Because we know (x+m)^2 expanded will provide x^2+2mx+m^2 and we have the extra addition of a value named n we can strictly focus on ensuring the expansion yields x^2+4x and deal with the -6 value by usin...

You should start with an introduction. The main aim of the introduction is to put the essay question into context, so that the examiner knows you are aware of the time period. However, even at this stage ...