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Firstly we must use the periodic table to look at the number of protons (11) contained within a sodium atom. This tells us how many electrons are contained within the shells of that atom as these two are ...

In order to get top grades in this essay, there must be a clear structure to it. This would consist of an introduction which should include three of the following: 1) it must start with a brief sentence i...

If you look at the formulae for the Sine and Cosine rules you'll see that the Sine rule involves two angles and two sides and the Cosine rule involves one angle and three sides.So have a look at the probl...

Osmosis is a natural phenomenon where the water molecules will seep through the semipermeable membrane separating 2 compartments, from an area of lower concentration to the area of higher concentration un...

Any from:Plant cells have a cell wall and animal cells don't.Plant cells contain chloroplasts and animal cells don't.Plant cells usually have one large central vacuole whereas animal cells can have many s...