Search our library of homework questions

Top answers

All subjects

All levels

Cracking of the unbranched compound E, C6H14, produced the saturated compound F and an unsaturated compound G (Mr = 42). Identify these compounds and write an equation for the reaction.

Compound E is an unbranched alkane. The general formula of an alkane is C_nH_2n+2.Compound E is CH₃CH₂CH₂CH₂CH₂CH₃.Com...

Answered by Sophie K. • Chemistry tutor

5020 Views

Solve the simultaneous equation: 3x+y=24, x-7-y=-3

Simultaneous equations can be solved either using substitution or elimination.
For this example we will use substitution to work out the answer, which will involve rearranging one of the equations (...

Answered by Nicholas G. • Maths tutor

4523 Views

Explain the photo-electric effect and how the particle theory of light explains the phenomena. State the equation used to the determine the kinetic energy of a photo-electron and explain the origin of the terms used in your equation.

The photoelectric effect is the stimulated emission of electrons due to the irradiation of photons onto the surface of a metal. The increase in the frequency of the photons doesn’t lead to an increase in ...

Answered by Joseph G. • Physics tutor

1936 Views

What does the term comparative advantage mean? How can I use this in an essay based question?

A country has a comparative advantage in something if it can produce it at a lower opportunity cost than any other country.
If for example Mexico were able to source and put together the components ...

Answered by Adam S. • Economics tutor

3001 Views

Describe the main functions of political parties in the UK today.

We must first identify precisely what the question is asking of us. This is an example of a "Describe..." question, which for A-Level Politics does not require analysis as much as explanation. I...

Answered by Jay S. • Politics tutor

20090 Views