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The concept of a mole can be difficult to get your head around.

We are used to giving some numbers names, for example 1 million instead of 1,000,000. And we can use a million as a unit, 3 mill...

professional psychological organisations lay down guidelines and rules that need to be followed in order to avoid harming our participants in any way. this moral guidelines ensure that all experiments...

Differentiation of arctan(x), also written tan^(-1)(x), requires a little knowledge of regular trigonometric algebra and differentiation, ...

Benzene is an aromatic compound.

The structure of benzene is a 6 membered ring of carbons each bonded to eachother with a sigma bond, containing two electrons.

The remaining 6 electron...

In English, in the past tense, we use a combination of an auxillary verb and a main verb in the past participle form. In the example 'I have eaten', 'have' acts as the auxillary verb and 'eaten' is th...