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SN1= only 1 species involved in the rate determining step = carbocation intermediate = racemic mixture = not optically active SN2= 2 species involved in the rate determining step =transition state = singl...

The outside of a bend has faster flow, which means that erosion occurs there. Over time, this means that the neck of the meander, which is the gap between 2 parallel channels in the meander, gets narrower...

DNA stands for deoxyribonucleic acid. And what is DNA? Well, it’s basically a carrier of genetic information. DNA is found in all cells, and it contains the information needed for cells to live, to grow a...

An enzyme is a type of protein which we call a biological catalyst. In biology, a catalyst is a chemical which helps speed up reactions without being used up itself. Therefore, if you add 2ml of an enzyme...

We can begin by working out the total number of children in the cinema. We know that for every 2 girls, there are 7 boys, which is the same as saying for every 1 girl, there are 3.5 boys. Three and a half...