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Describe the structure and bonding in Benzene (C6H6).

Benzene is a planar 6 membered cyclic ring, with each atom in the ring being a carbon atom (Homo-aromatic). Each carbon atom is sp^2 hybridised being bonded to two other carbon atoms and one hydrogen atom. T...
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Answered by George N. • Chemistry tutor
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What case studies do I need to know for a 'Globalisation' essay question?

As there are many different components to globalisation, similarly you will need a sound knowledge of a variety of case studies which display an understanding of the many facets of globalisation. For example...
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Answered by Iloni K. • Geography tutor
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Given that y=4x^3-(5/x^2) what is dy/dx in it's simplest form?

y = 4x^3-5x^-2 dy/dx = 12x^2+10x^-3
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Answered by Trishul P. • Maths tutor
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Solve the following equation for k, giving your answers to 4 decimal places where necessary: 3tan(k)-1=sec^2(k)

3tan(k)-1=sec^2(k) ( ) We want to get this in the form of a quadratic equation in a single variable, and in this case the easiest variable is tan(k). To do this we use the trigonometric identity sec^2(k)=1+t...
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Answered by Katrina M. • Maths tutor
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How to represent a negative decimal number using 8-bit binary two's complement ?

First of all we need to convert our decimal negative number into binary without taking the sign into account. Then we have to apply some rules to convert positive binary into a negative one. To do so we have...
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Answered by Hassan I. • Computing tutor
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