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Discuss the 2 most-commonly encountered representations of benzene, providing an advantage and disadvantage for each

Kekule structure advantages: Useful for mechanistic understanding, can push arrows to advise likely regiochemistry. Disadvantages: ignores aromatic stablisation, drawn structure much higher energy than actua...
WH
Answered by William H. • Chemistry tutor
4655 Views

What do I need to include in my personal statement?

You should base your personal statement around 3 main points. Your introduction should include why you want to study the subject (including what parts of the subject specifically interests you and your futur...
KS
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What's the mechanism behind inspiration in human?

This entire process is based on a pressure gradient or the difference in air pressure between the air inside our lungs and the air in our external environment. Just like the normal principle of concentration...
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Answered by Pam N. • Biology tutor
5725 Views

An ultraviolet wave of continuous frequency reflects from a solid surface back in the direction of the transmitter. Assuming no amplitude is lost, describe and explain the behaviour of the particles in the medium between the transmitter and surface.

The transmitted and reflected waves are of equal frequency and are both continuous, so they will superpose and interfere with each other. In the regions of maximal constructive interference, antinodes will f...
JS
Answered by Jonas S. • Physics tutor
2517 Views

Prove that the sum of four consecutive whole numbers will always be even.

First, check you understand what the question's asking by determining the key words. Next, try a couple of examples to convince yourself that the statement does in fact work, i.e 1+2+3+4=10, which is even. N...
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Answered by Emma B. • Maths tutor
28067 Views