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With reference to this extract, explain what J.S Mill means by happiness.

In “Utilitarianism” Mill argued that happiness was the sole basis of morality. Through observation of other men and women he found that all people have a natural tendency to seek happiness and therefore conc...
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Answered by George T. • Philosophy tutor
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At 25 °C, the initial rate of reaction is 3.1 × 10−3 mol dm−3 s−1 when the initial concentration of C is 0.48 mol dm−3 and the initial concentration of D is 0.23 mol dm−3 . Calculate a value for the rate constant at this T when rate = k [C][D].

The rate equation is given. So the first step is rearranging it to make the rate constant k the subject of the equation, by dividing both sides by [C][D]. k = (rate/[C][D]) now plug in the values given in th...
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Answered by Krystof C. • Chemistry tutor
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Write the equation x^2 + 6x - 40 = 0 in the form (x + a)^2 - b = 0 and then solve for x

(x 2 + 6x + 9) - 49 = 0 (x + 3)2 - 49 = 0 then to solve (x + 3) 2 = 49 x + 3 = +-7 x = -10 or x = 4
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Answered by Darragh S. • Maths tutor
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Explain what is meant by temporal and spatial summation in the context of synapses.

Context : We often think of a linear model of one pre-synaptic neurone linking up with one post-synaptic neurone. In reality, the nervous system is a large network, many pre-synaptic neurones may terminate a...
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Answered by Bethany K. • Biology tutor
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What are the three components required for photosynthesis?

Carbon dioxide, water and sunlight
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Answered by Dylan A. • Biology tutor
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