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Question 1 of 3

How many millilitres of 12 % w/v Potassium Permanganate do you need to prepare 600 ml of 4 % w/v Potassium Permanganate?

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millilitres
You need 200 millilitres of 12 % w/v Potassium Permanganate.

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Question 2 of 3

How many millilitres of 2 M Potassium Hydroxide are needed to prepare 1500 ml of 0.75 M Potassium Hydroxide? Answer to 1 decimal place.

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millilitres
562.5 ml of 2 M Potassium Hydroxide are needed.

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Question 3 of 3

A solution contains 30 grams of Ethanoic Acid in every 150 ml of solution. How many millilitres of this solution are needed to prepare 500 ml of a 10 % w/v solution of Ethanoic Acid.

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millilitres
250 ml of the original solution is needed.

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