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First you must calculate the moles of Mg that originally reacted. moles = mass/Mr moles=48/24 moles= 2 Molar ratio of Mg to MgCl2 is 1:1 Therefore 2 moles of MgCl2 were produced moles= mass/Mr mass= moles...
If an essay (24 mark) question is asking you about a specific concept from a certain perspective it is always a good idea to include another perspective to demonstrate you ability to evaluate (A03/A04).Fo...
It is useful to underline/highlight any key concepts/ideas they are asking about to target your answer. For example - To what extent do urban areas in lower income countries (LICs) or new...
Depending on what you've been taught it is great to understand the basic beliefs of religions you have learnt about.For example - Christianity and Judaism. In an ethics question if you have a summary of t...
(2x + 3)/(x+4) - (3x - 6) = 4 Initial equationTimes all terms by (x + 4) (2x + 3) - (3x - 6)(x + 4) = 4 (x + 4)Multiply out the brackets (2x + 3) - (3x2 + 12x - 6x - 24) = 4x + 16Remove from br...
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