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Where does the water come from that is given off when making an ester?

One hydrogen (-H) from the alcohol group (-OH) on the alcohol breaks off and joins with the alcohol (-OH) group that breaks off of the carboxylic acid (-COOH). So the -H from alcohol joins the -OH from carbo...
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Answered by Hannah P. • Chemistry tutor
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What are two ways which the body cools itself down when too hot?

Vaso-dilation: blood vessels near to the skin's surface dilate which allows more heat to be lost. This is because more blood can flow through as there is more room in the lumen. Sweating: the hotter we are, ...
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Answered by Hannah P. • Biology tutor
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How to solve a simple simultaneous equation

Solving simultaneous equations: Example Question: Equation 1 ---> 2y – 4x = 2Equation 2 ---> 4y – 6x = 10 Find the unknown quantities, x and y. Solution: Step 1: Firstly check whether there are more th...
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Answered by Nivedah K. • Maths tutor
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What is the difference in pronouncing 'ß' and 'ss'?

'ß'- examples: Sp a ß; gr o ß- the vowel before the ß, is pronounced longer 'ss'- examples: e ssen, K a sse, R u ssland, verg e ssen, b e sser- The vowel before the 'ss' is pronounced shorter It is also know...
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Answered by Nivedah K. • German tutor
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How do I write a poetry comparison essay?

The most important part of any English essay is the planning: you need to make sure that you know what you are writing about before you start. With a poetry comparison essay, you will usually be looking for ...
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