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Explain the structure and characteristics of benzene

Initally, benzene was thought to have the kekule structure. This was thought to be an interconversion of two different discrete strucutres of a 6 carbon ring with single and double bonds. However there we...

Answered by Daniella P. • Chemistry tutor

5960 Views

What are the two main differences between prokaryotic and eukaryotic cells?

The main difference between the two types of cell is that prokaryotic cells have no (membrane-bound) organelles. This means that the processes that usually happen in organelles take place in the cytoplasm...

Answered by Alex B. • Biology tutor

19598 Views

Given a fixed parabola and a family of parallel lines with given fixed gradient, find the one line that intersects the parabola in one single point

Let the parabola be y=x²and let the family of lines be y=2x+c, in order to study the intersection points we need to consider the second order linear system given by having the two equations ab...

Answered by Francesca T. • Maths tutor

2825 Views

Which of the following was the more important reason why Hitler was appointed Chancellor of Germany in 1933: • the economic weakness of the Weimar Republic • the political weakness of the Weimar Republic? Explain your answer with reference to both points.

After the First World War, Germany had been left in great industrial and economic crisis, which was caused by the physical disasters of the war, as well as the sanctions imposed to the German government b...

Answered by Benjamina D. • History tutor

14491 Views

Find all solution to the equation 3tan(x)=8/sin(x) for 0<=x<=360 degrees

By multipying across and using some trigonometric identities we can turn this in to a much simpler quatratic which can be solved using the quadratic formula. This step can be simplified by using the subst...

Answered by James B. • Maths tutor

5354 Views