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The best way to think of a mole is the same way you would consider a dozen to be 12 but in this case a mole is 6.2 x 10²³ molecules. 

You can use moles to work out the mass of ...

Write a lot about a little. It is better to focus on one small specific part of the text and put it into a wider context. For example, focusing on one specific word or sentence and using that as a star...

In order to improve coursework marks, the first step is to completely deconstruct the given question. If you look back over the essay and see if you've fully answered it or if you've missed an aspect o...

Grade boundaries can seem to hold back creative freedom, but as long as the information is relevant it can still be made to be interesting. Secondary reading of anything can help here. This doesn't hav...

As the number of equations is the same as the number of unknowns, there is exactly one solution!We start by labelling the two equations:2x + 3y = 28 (1)x + y = 11 (2)There is more than one way to approach...