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Briefly describe the concept of electronegativity and explain why CCl4 is a non-polar molecule

Electronegativity is the tendency of an atom to attract a pair of electrons in a covalent bond. The Pauling scale assigns values to this tendency for each element in the periodic table ranging from the lo...

Answered by Samora S. • Chemistry tutor

24416 Views

Earth is being added to a pile so that, when the height of the pile is h metres, its volume is V cubic metres, where V = (h6 + 16) 1 2 − 4.Find the value of dV/dh when h = 2.

As V=(h⁶+16)^1/2 -4, the chain rule can be used to calculate dV/dh.

dV/dh=3h⁵(h⁶+16)^-1/2

h=2 can be su...

Answered by Lewis K. • Maths tutor

6186 Views

Work out 51% of 400?

51/100 * 400 = 51/100 * 400/1 = 51/1 * 4/1

= 204

Answered by Thana T. • Maths tutor

5452 Views

Explain a few problems the UK economy has endured or is expected to endure as a result of the Brexit Referendum.

Students would be expected to focus on the exchange rate effect - this is quite a useful effect since it allows students to explore the conflicting effects on exporters and importers. It is a nice way to ...

Answered by Mohammed P. • Economics tutor

1600 Views

Translate the following words into French: glass, towards, worm, and green. (hint: they're all homophones)

The translations are: - glass => verre (it can mean both the container as well as the material, just like in English); - towards => vers; - worm => ver (earthworm =>...

Answered by Olivier D. • French tutor

4254 Views