Top answers

Explain the bonding in benzene, and hence its greater stability

Benzene consists of six carbon atoms in a hexagonal ring, all of which are sp^2 hybridised. This allows the perpendicularly oriented 'p' orbital of each carbon to overlap laterally all around the ring. The d...
EP
Answered by Ethan P. • Chemistry tutor
3321 Views

Outline the four levels of protein structure.

Primary structure is the number as well as the sequence/order of amino acids in a polypeptideSecondary structures are regularly repeating structures which can either be beta-pleated sheets or alpha-helices h...
EP
Answered by Ethan P. • Biology tutor
2386 Views

Tom has a circular garden of radius 30m and he wishes to cover it with fertiliser. Boxes of fertiliser cover 28m^2 of garden. How many boxes will Tom need to cover his entire garden?

Area of a Circle = π radius 2 Area of Garden = π 30*30 = 2827.43 m 2 Boxes needed = 2827.43/28 = 101
OR
Answered by Oliver R. • Maths tutor
3267 Views

Describe how mark-release-recapture technique could be used to estimate a population of mosquitoes.

Capture mosquitoes by taking a sample from the area of interest for a set period of time, mark the collected insects with a non damaging mark and release then.Then allow time for the marked mosquitoes to dis...
AJ
Answered by Anna J. • Biology tutor
5476 Views

How do I find the coordinates of the turning point of the graph: y=3x^2-6x+7 ?

Our first step here is to differentiate the equation of the graph. To do this we will differentiate each of the three parts in the equation, as follows: To differentiate 3x^2, we first multpily the 3 in fron...
JD
Answered by Joshua D. • Maths tutor
7125 Views