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What do I need to know about fractional distillation?

Fractional distillation is covered in almost every GCSE chemistry course, although what you need to know varies slightly by syllabus. The main points to take away are explained below. Why do we do fractional...
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Answered by Sophie V. • Chemistry tutor
20280 Views

I'm finding all the tenses really hard to get to grips with, have you got any advice?

Absolutely. Firstly, I'd recommend taking some A4 sheets of paper and some coloured pencils. Take the present tense first and write out the -er, -ir and -re common endings, each on one page. Stick these arou...
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Answered by Sophie M. • French tutor
3808 Views

How do I recognise Baroque style?

There are many defining features of Baroque style, but perhaps the easiest way to recognise it is by listening to the instruments. The harpsichord was the main Baroque keyboard instrument, as the piano we kn...
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Answered by Susie B. • Music tutor
16000 Views

What is the best way to go about answering a long answer biology question?

Answering questions in biology that offer more marks is all about key words - usually the examiner has a few of these in front of them that offer a mark simply for using the word in your answer. The good thi...
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Answered by Daisy Y. • Biology tutor
7736 Views

Calculate the percentage, by mass, of carbon in sodium hydrogencarbonate (NaHCO3)

When faced with this style of problem there are steps to correctly answer the quesion: Step 1 - identify the atomic mass of carbon Step 2 - calculate the atomic mass of the compound Step 3 - work out the per...
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Answered by Hayden T. • Chemistry tutor
44152 Views