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What does ‘aromatic’ mean?

In A Level Chemistry, the word aromatic means a molecule’s structure contains at least one cyclic ring which has a delocalised pi electron cloud above and below it. This occurs from unbonded P orbital electr...
SL
Answered by Sam L. • Chemistry tutor
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A curve has equation y = x^3 - 6x^2 - 15x. The curve has a stationary point M where x = -1. Find the x-coordinate of the other stationary point on the curve.

A stationary point can be found when dy/dx = 0 . The first thing we need to do is differentiate y to find dy/dx, and solve it for dy/dx = 0. This gives usdy/dx = 3x 2 - 12x - 15 = 0 = (3x + 3)(x - 5) = 0 (us...
EG
Answered by Ellie G. • Maths tutor
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What is the difference between a symbol and a motif?

A symbol is often an object that is described in a text which has a deeper meaning than what it may seem at surface level. It appears singularly or few times throughout a novel or play, for example, flying b...
CS
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Translate: For my holiday last year, I went to Spain with my family. It was fun because we went to the beach and swam in the sea. I especially loved the food. I would like to go to Spain again, but next summer, I think I’m going to France with my friends.

L’année dernière, pour mes vacances, je suis allé(e) en Espagne avec ma famille. C’était amusant car nous sommes allés à la plage et nous avons nagé dans la mer. J’ai particulièrement aimé la nourriture. J’a...
BE
Answered by Bill E. • French tutor
9962 Views

With the help of an example, give the meaning of land tenure (3)

Land tenure refers to who owns the land. In LEDCs land is usually not owned by the farmer but by a landlord. This happens in the lower Ganges Valley, where farmers pay their landlords by giving them part of ...
ES
Answered by Eva S. • Geography tutor
3651 Views