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First, the question asks us to find x in terms of y, or in other words, rearrange the equation to be in the form 'x=', rather than 'y=', as it is currently. We start wit...

Peter the Great. This leads on to further questions about the article and the current context of diplomatic relations between France and Russia. At A level the pupil will be encouraged to start expressing...

The electronegativity is the tendency of an atom to attract electrons towards itself in a covalent bond.

The electronegativity of the halogens decreases down the group as the radius of each atom in...

It's important information as it tells you how fast light travels through the material. This can give you an insight into how the angle of refraction of the light is related to the angle ...

The first thing to do is make a plan. Spend 5-10 minutes doing this to make sure you fully understand what the question is asking. Briefly write what you want to include in your introduction, main body an...