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What is meant by the term homologous series?

A series of compounds with the same functional group, having similar chemcial properties and reactions.
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Answered by Humza C. • Chemistry tutor
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Explain how the alveoli create a surface for efficient gaseous exchange

Firstly, the alveoli walls consist of a one-cell thick layer of squamous epithelium. This means there is a thin barrier to diffusion, and a small distance for oxygen molecules to diffuse across to get to blo...
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Answered by Humza C. • Biology tutor
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How do I write a good introduction for my essay?

When writing an introduction, being concise and precise is key. Your introduction should contain no more than a couple of sentences, depending on the length of your essay. It should provide a very general co...
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Answered by Ella M. • English tutor
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Differentiate y = (3x^2 + 1)^2

Looking at this question the first thing we should notice is that there is a an x squared inside a bracket which is also squared. As there is function inside a function we must use the chain rule. The simple...
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Answered by Hannah B. • Maths tutor
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Sketch a graph of the equation of y=3x+2

Looking at this equation you can see that it is in the form of y = mx + c and we know that this is the equation of a straight line. One way to solve this would be to inspect the equation and see that the c c...
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Answered by Hannah B. • Maths tutor
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