Top answers

Describe the mechanism for bromination across a double bond

This mechanism is an example of an electrophillic addition reaction. Firstly consider the approach of a Br2, and how that bond will develop an induced dipole as a result of the high electron density on the d...
LO
Answered by Lewis O. • Chemistry tutor
3553 Views

Define first past the post and List PR voting systems.

First Past the Post is a voting method in which voters are required to indicate on the ballot the candidate of their choice. The candidate who receives more votes than any other candidate wins in the area in...
BT
Answered by Bruce T. • Politics tutor
2369 Views

How do I close read a passage from a literary text?

Close readings are an essential part of the study of English Literature. They form the basis of a lot of essay writing, exams and coursework and become particularly important if you’re thinking of studying a...
CN
6991 Views

How are vesicles and amygdales formed in an igneous rock?

When a lava cools in forms air bubbles which can then burst. Leaving a hollow vesicle behind. Amygdales are vesciles infilled by minerals. Hydrothermal water with dissolved minerals pass through vesicles. As...
RC
Answered by Ruth C. • Geology tutor
4553 Views

Solve (z-i)+(z+i)+(z-1)+(z-1)

Since we are dealing with complex numbers and taking its modulus, we can rewrite (z-i)=((-1)(i-z))=(i-z) doing the same for (z-1)=(1-z) we get (i-z)+(z+i)+(1-z)+(z-1)=(i+i+z-z+1+1+z-z) =(2i+2)=4 as we are ta...
YZ
4565 Views