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Describe the structure and bonding of benzene.

Benzene consists of a ring of 6 carbon molecules. Each of these carbon molecules are bonded to each other by single bonds. This leaves free electrons in p-orbitals. The p-orbitals overlap, creating pi-bonds ...
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Answered by Sarah C. • Chemistry tutor
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Differentiate y=(x^2+5)^7

In this example instead of multiplying out 7 brackets it is useful to use the chain rule, which is used to differentiate the composition of more than one function. If we let what is inside the bracket equal ...
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Answered by Rachel B. • Maths tutor
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Discuss the depiction of 'Helena' in Shakespeare's "A Midsummer Night's Dream".

Helena's character is the epitome of unrequited love. Her intrinsically irrational nature stemming from her emotional instability is clearly demonstrated in Act 3 Scene 2 through the elongated "O" ...
HM
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How do I know which method of integration to use?

In reality there's no way to know for certain and in fact some integrals can actually be proven to be impossible but they won't give you those in the exam. There's only really two main methods that you'll ne...
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Answered by Oliver R. • Maths tutor
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find the derivative of the following equation: a) y = 5x^3 - 4x^-4 + xb

Ans: dy/dx = 15x^2 + 16x^-5 + b To solve for the first part of the right hand side, remember to bring the power of 3 forward and multiply, then reduce our power by 1 to leave 15x^2. For the second part, be c...
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Answered by Tutor38942 D. • Maths tutor
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