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Functionalist sociologists see the education system as a vital social institution in modern society. They argue that the education system exists to perform a range of essential functions for individuals, ...

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Order: hydrogen fluoride > hydrogen bromide > hydrogen.Hydrogen fluoride contains a hydrogen atom bonded directly to a fluorine atom. The fluorine is highly electronegative and so pulls the bonding ...

First, you need to relax and stay calm which might seem difficult in an exam situation but remember when the author this piece it is unlikely they wrote it for student sitting in an exam hall. Then simply...

Remember that the equation of a line is y=mx+c and m is the gradient of the line. The gradient of a perpendicular line will be the negative reciprocal of m ( that just means it will be -1/m). You can then...