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What is a mole?

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 million, 60 million...
DA
Answered by Dara A. Chemistry tutor
5287 Views

Capitalisation: Countries and nationalities

While we always capitalise the first letter of all countries and nationalities in written English, the same cannot be said for written French. While in French, countries are also always capitalised, whether ...
VL
Answered by Vivienne L. French tutor
25700 Views

What are ethical issues in psychological research?

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 are co...
DL
Answered by Doron L. Psychology tutor
10857 Views

How do you differentiate arctan(x)?

Differentiation of arctan(x), also written tan ^(-1) (x), requires a little knowledge of regular trigonometric algebra and differentiation, and implicit differentiation. Let's set y = arctan(x) to start. The...
JB
12511 Views

What is the structure of benzene?

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 electrons form a pi-cloud of el...
CF
Answered by Chloe F. Chemistry tutor
4729 Views