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An equilibrium between hydrogen and nitrogen to make ammonia. Explain what would happen to the amount of product if a) pressure was increased b) temperature was increased c) a catalyst was added. Energy change -92KJ/mol

This is quite a complicated sounding question but it is actually quite simple if you break it down! Start by writing a balanced equation for the reaction: 3H 2 (g) + N 2 (g) => 2NH 3 (g) Now you can see t...
AC
Answered by Abigail C. • Chemistry tutor
10808 Views

What is the passive in French and how does it work?

The Passive, as in English is one of the three grammatical voices and is used to say that something is ' being done by somebody else '. In grammatical speak, we would say that the action that's described by ...
CS
Answered by Charlotte S. • French tutor
4886 Views

How would you approach a poetry essay?

It is absolutely imperative that you read the poem through first at least twice. I would suggest that you whisper it to yourself, even in exams, because poetry is a highly experiential literary form and this...
BW
Answered by Ben W. • English tutor
6536 Views

What should I do with an essay question that's just a quotation?

Let's begin with an example. "What immortal hand or eye, / Could frame thy fearful symmetry?" Hypothetically, this question would be from an A2 examination on William Blake. As is more common at hi...
CH
Answered by Christian H. • English tutor
2293 Views

The equation of a curve is y = x^2 - 5x. Work out dy/dx

This is an example of differentiation. This can be useful in many concepts, one being finding the gradient of a line or curve at a certain point. To differentiate these types of equations, the rule is to mul...
VL
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