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Why does the bromine become polarised in HBr during electrophilic addition

A C to C double bond has a high electron density. As the bromine gets close to the C=C bond the high electron density repels the electrons in the H-Br bond further towards the H making the H slightly negativ...
RC
Answered by Richard C. • Chemistry tutor
8195 Views

Compare and contrast...

'Compare and contrast' is the opening to a great many literature questions, from GCSE right through to degree. At A level you'll be expected to not only discern the difference but demonstrate you have graspe...
JC
5010 Views

How does writing reflect the audiences and purposes for which it was intended ?

An audience is the group of people the writer is addressing. There are 3 main purposes for writing: (examples in text messages) 1) To inform: "not coming over tonight. Sorry x" 2) To persuade: &quo...
ES
5638 Views

How could species have evolved from an ancestor such as Archaeopteryx?

When the population of a species is separated, each group is put under different selection pressures due to differing environments. In each population there is genetic variation, and more offspring are produ...
HJ
Answered by Heather J. • Biology tutor
8900 Views

Find the area of the region, R, bounded by the curve y=x^(-2/3), the line x = 1 and the x axis . In addition, find the volume of revolution of this region when rotated 2 pi radians around the x axis.

As we are looking to find the area under a curve we can use integration . The area under a curve with equation y = f(x), bounded by the lines x = a and x = b and the x axis can be expressed as:A = integral (...
HF
Answered by Henri F. • Maths tutor
9177 Views