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How do I answer scenario questions?

In AQA Law A Level, for units 2, 3 and 4, you will be asked a scenario question. To ensure you get the best grade you can, you need to answer the question in a specific way. First, you need to have a good un...
AM
Answered by Andrew M. • Law tutor
14394 Views

Given is a following reaction at equilibrium: N2(g) + 3H2(g) ⇄ 2NH3(g), ΔH < 0. What will be the effect of changing the following conditions on the system? 1. Increasing pressure. 2. Decreasing temperature. 3. Adding a catalyst. 4. Adding HCl(g).

The correct approach to this question is to use the Le Chatelier's principle, which states that when you change conditions of a system at equilibrium, the system counteracts the change - a new equilibrium is...
MK
Answered by Maciej K. • Chemistry tutor
22559 Views

Find the x co-ordinates of the stationary points of the graph with equation y = cos(x)7e^(x). Give your answer in the form x = a +/- bn where a/b are numbers to be found, and n is the set of integers.

The stationary points on a curve of the form y=f(x) are where dy/dx = 0. To find dy/dx, differentiate using the product rule: dy/dx = 7e^x(d/dx(cosx)) + cosx(d/dx(7e^x)) = -sinx(7e^x) + cosx(7e^x). Now set d...
JS
Answered by Joseph S. • Maths tutor
7668 Views

How do I use Pythagoras' Theorem to calculate the hypotenuse of a triangle?

[use of board] So, Pythagoras' theorem states that a^2+b^2=c^2. Therefore, we need to mark the triangle with a, b &amp;c. a and b do not matter, c must be the longest edge, that creates the diagonal. Put the...
CT
Answered by Cathy T. • Maths tutor
4143 Views

How do I structure an effective essay, for example for Lord of the Flies?

To answer this question, let's suggest that the essay question is 'How is human nature shown to change throughout the novel?' The best way to structure an essay is using the PEAL method: Point, Evidence, Ana...
CT
Answered by Cathy T. • English tutor
7442 Views