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Explain why successive ionization energies of an element increase

More energy is required to remove successive electrons from an ion with an increasing positive charge. There is large increases in ionization energy when the 2nd and 10th electrons are removed. This mean...

RN
Answered by Roisin N. Chemistry tutor
2463 Views

Why do firms in a perfect competition always make normal profit in the long run?

Market structures are models used by economists to represent the conditions of the market of particular goods. The answer to the question lies in one of the assumption to be made in the model of perfect c...

TD
2008 Views

Given that sin(x) + cos(x) = 2/3, find cos(4x)

It is not clear what to do when starting, but we realise that by making both sides to the power of two, will lead to have an expression containing sin^2(x) + cos^2(x), which is equal to one (which will pr...

FR
Answered by Felipe R. Maths tutor
3816 Views

What are the main themes of The Great Gatsby?

This question would be answered through a process in which the student and I discuss the events of the novel and, using the whiteboard, produce a table in which we list what we decide are the main themes ...

LW
1816 Views

Explain the structure of the DNA double helix, including its subunits and the way in which they are bonded together

DNA is made up of subunits called nucleotides. Each nucleotide is comprised of one nitrogenous base (either adenine, cytosine, guanine, or thymine), one phosphate, and one deoxyribose sugar. The nucleotid...

BH
Answered by Bethan H. Biology tutor
8451 Views

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