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Explain the bonding in and the shape of a benzene molecule.

Stage 1 -Bonding 1a) Each C has three (covalent) bonds 1b) Spare electrons (in a p orbital) overlap (to form a pi cloud) 1c) delocalisation
Stage 2 -Shape 2a) Planar 2b) Hexagon/6 carbon ring/120o b...

Answered by Yousif C. • Chemistry tutor

2520 Views

Escribe sobre tus últimas vacaciones. Debes incluir: dónde se alojabas, lo que hacías y lo qué más te gustaba .

En mis últimas vacaciones, fui a españa con mi familia. Anteayer, volvimos del piso en el que nos alojabamos. Todos los días nos rel...

Answered by Michael B. • Spanish tutor

2791 Views

Explain (using a sport of your choice) which physiological aids would be most beneficial to a performer.

The most effective physiological aid for a dancer would be cooling aids, these are legal and allow for reduced core body temperature, decreased sweating, dehydration and early fatigue, decreased pain and ...

Answered by • Physical Education tutor

1835 Views

(a) Find the set of values of k that satisfy the inequality k^2 - k - 12 < 0. (b) We have a triangle ABC, of lengths AC = 4 and BC = 2. Given that cos B < 1/4 , find the range of possible values for AB:

Solution: Let us consider the function f(k) = k²- k -12. Firstly, we want to find out the roots of this function. We calculate the discriminant: Δ = b² – 4ac = 49 hence we ...

Answered by Alexandru H. • Maths tutor

5255 Views

This question is on meiosis: Variation occurs during meiosis, give the two ways this happens (include the phases where it occurs) (4 marks)

During prophase 1, homologous chromosomes will pair up to form a bivalent, this is where crossing over can occur. Chromatids will twist around each other and will break and reform, resulting in crossing o...

Answered by • Biology tutor

4991 Views