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Explain why benzene requires use of a halogen carrier catalyst to react with bromine while phenol does not.

The oxygen atom in the phenol molecule has a lone pair of electrons. These electrons become delocalised into the aromatic ring, increasing its electron density. This activates the ring. This causes Br

Answered by Aidan M. • Chemistry tutor

14572 Views

Evaluate the opinion that ‘there is more to Utilitarianism than just promoting happiness’.

The moral theory of Utilitarianism is based on one universal guiding principle that was initially founded by Jeremy Bentham in in his first substantial (though anonymous) publication, A Fragment on Govern...

Answered by Lowri C. • Religious Studies tutor

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Describe and evaluate the procedure of Zimbardo’s study into social roles.

This is an 8 mark question with 4 marks for AO1 (describe), and 4 marks of AO3 (evaluate). It is important to note that use of the word “procedure”. This means you want to focus on the procedure of the ex...

Answered by Sophie S. • Psychology tutor

35527 Views

Determine the tangent to the curve y = sin^2(x)/x at the point, x = pi/2. Leave your answer in the form ax+by+c=0

First determine the y coordinate of the curve at the given x coordinate, in this case, y = sin²(pi/2)/(pi/2) = 1²/(pi/2) = 2/piDifferentiate the function with respect to x to determi...

Answered by Thomas B. • Maths tutor

5068 Views

Describe the process of natural selection

Within a population of a species there will be variation between individuals. These variations arise because of mutations causing differences in alleles and phenotypes. Some individuals will have an allel...

Answered by Harry R. • Biology tutor

2605 Views