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In your opinion, what does the mockingbird symbolise in To Kill a Mockingbird by Harper Lee?

The mockingbird features prominently throughout Lee's novel and is used to represent innocence. Near the beginning of the novel, Atticus tells Jem and Scott that it is a "sin to kill a mockingbird.&quot...
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Answered by Ursula R. English tutor
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How does Arthur Miller present ideas about witch-hunts in The Crucible?

The 'How does' question is very common in a GCSE English Literature exams. In terms of the strcuture, it is important to keep it clear and concise, for example, ordering it through ideas (parallels between t...
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Solve the simultaneous equations (1) x + 3y = 7 and (2) 2x + y = 4

It's impossible to solve an equation with two unknowns (x and y) so we must find a way to get rid of either x or y before solving an equation. Using substitution rearrange the equation 1 so x is the only ter...
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Answered by Simon S. Maths tutor
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How can we calculate product yield using reactants and reaction stoichiometry?

If we know the chemistry for a reaction we only need to know quantities from one of our reactants to calculate a product yield. For instance, in a reaction to make hydrogen peroxide, we can calculate the mas...
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Answered by Joshua P. Chemistry tutor
3203 Views

Why don't Hydrocarbons and Water Molecules mix, and why might an emulsifier fix this?

Hydrocarbons are long chained, non-polar molecules of Carbon and Hydrogen. As the chain length increases the boiling point of oil increases and the intermolecular forces get stronger. At smaller chain length...
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Answered by Joshua P. Chemistry tutor
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