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Why is phenol more easily nitrated than Benzene?

This is due to the -OH phenol functional group, which makes nitrating the molecule easier. Benzene has a delocalised pi-system above and below the plane of the molecule. The result of this is that: it is att...
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Answered by George W. • Chemistry tutor
16331 Views

How do I approach an Italian text?

Read the whole text first, then underline the key words related to it. If there is an exercise section underneath make sure you read all the questions first. Although Italians tend to use a lot of words, jus...
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Answered by Allegra M. • Italian tutor
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What changes occurred to peasantry during the industrial revolution in England?

Probably the most apparent change during the industrialisation in the late 18th century, early 19th century is that urbanisation began. People moved to cities in the hope of getting a job there, since the ne...
Answered by • History tutor
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Describe how the body responds to immunisation

Immunisation introduces a specific antigen into the body. This is recognised as foreign and stimulates B lymphocytes to produce plasma cells and memory cells. Plasma cells go on to secrete specific antibodie...
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Answered by Zainab H. • Biology tutor
4925 Views

There are 6 orange sweets and n total sweets in a bag. The probability of picking two sweets one at a time randomly and both being orange is 1/3. Show that n^2 - n - 90 = 0

Don't panic, focus on what you do know.You know 6/n * 5/(n-1) = 1/3or 30/(n^2-n) = 1/3simplify this to reach the target expression.
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Answered by Hussain A. • Maths tutor
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