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14 November, 09:49

Calculate how much glycerol you would need to make 200 ml of a 20% (v/v) glycerol solution. (Glycerol is a liquid and the initial concentration is 100%).

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  1. 14 November, 09:56
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    The key to solving this problem is to found how much the weight of glycerol needed to make the solution. The calculation would be:

    weight = volume * concentration

    weight1 = weight2

    volume1 * concentration1 = volume2 * concentration2

    200ml * 20% = volume2 * 100%

    volume2 = 200ml * 20/100

    volume2 = 40ml
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