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What is the subjunctive and how do I use it?

The subjunctive is a mood meaning it's quite difficult to translate it directly and/or visibly into English. Generally, it follows set phrases. We can group the phrases by their meanings in order to try and ...
MK
Answered by Mouki K. • Spanish tutor
2152 Views

How do I think of evaluation points in exam essays?

It's impossible to remember evaluation points for every possible essay that may come up on the exam, so it's a good idea to always think of what's covered in the Issues and Debates topics, and apply it to th...
OJ
Answered by Oscar J. • Psychology tutor
5363 Views

The following equilibrium is set up in a glass syringe. 2(NO2) (brown gas) ‹-› N2O4 (colourless gas) ∆H = -58 kJmol-1. Using le Chatelier's principle, predict and explain how heating up the mixture would affect it's appearance.

At first this question can seem confusing, but by breaking it down we can better understand what we are being asked to do. Firstly, we need to recall le Chatelier's principle - that an equalibrium will shift...
RS
Answered by Robert S. • Chemistry tutor
5835 Views

What is meant by the doppler effect?

The doppler effect is the change in frequency and wavelength of waves coming from a wave source moving relative to you. If a wavesource is stationary then the waves in all directions all have the same freque...
TD
Answered by Thomas D. • Physics tutor
2632 Views

How do you resolve forces on an object on an angled plane?

The forces should be resolved in two directions: parallel to the plane, and perpendicular to the plane. Friction will act parallel to the plane (up the slope), and the normal force wil act perpendicular to t...
BG
Answered by Benjamin G. • Maths tutor
7169 Views