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Describe the changes in the electronic properties of an phenyl ring when attached to an NO2 group or a NMe2 group when compared to a benzene ring.

NO2 is a strongly electron withdrawing group, making the ring more electrophilic (pi withdrawing).NMe2 is a strongly electron donating group, making the ring more nucleophilic (pi donating).These changes ...

Answered by Sebastian P. • Chemistry tutor

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Describe the motion of a ball dropped into a theoretical hole drilled from the surface of the Earth, through its core to the other surface.

Make assumptions:No air resistanceEarth is perfectly sphericalEarth is of uniform densitySimple harmonic motion, the ball would oscillate between the position dropped and the corresponding position on the...

Answered by Sebastian P. • Oxbridge Preparation tutor

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Describe the structure of benzene with reference to delocalisation and an analysis of the Kekule structure.

Benzene is a circular molecule composed of 6 carbon atoms, each forming a single bond to two other carbons and one hydrogen. The fourth electron in the valence shell of each carbon is placed in a p orbita...

Answered by Sebastian P. • Chemistry tutor

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Define market failure and give an example. Explain how government intervention may reduce market failure.

Market failure is when the price mechanism leads to an inefficient allocation of resources and a loss of economic welfare. One example of market failure is Public Goods. These are non-excludable and will ...

Answered by Alex W. • Economics tutor

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Ich wohne mit meinen zwei Kindern in einem Doppelhaus. Mein Sohn geht ins Gymnasium, wo er gute Noten bekommt. Meine Tochter hat Fremdsprachen an der Universität studiert, weil sie im Ausland arbeiten möchte. Translate into English.

I live with my two children in a semi-detached house. My son goes to grammar school, where he gets good grades. My daughter studied foreign languages at university because she would like to work abroad.

Answered by Daniel M. • German tutor

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