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What is a buffer?

A buffer is a solution that resists a change in pH when small amounts of acid or base are added. It is composed of either a weak acid or a weak base wit...

There are many ways to solve quadratic equations including completing the square, factorisation and using the quadratic equation.

Factorisation involves breaking the quadratic equation in...

As well as learning key dates, facts and issues, a really important revision tip would be to go over past paper questions where you can get access to them. The benefit of this is to enable you to think...

The personal statement is supposed to be an academic statement, dmeonstarting your personally and interests to your prospective universities and explaining how you will be a good choice for the degree....

This question refers to arguments about the existence of God. The God we normally think about in the west is supposed to have several characteristics. He is:

Omnipotent (all-powerful)