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Softening hard water by boiling
Temporary hardness can be removed from water by boiling. Shake a little temporary hard water with a few drops of soap solution and see if you can make suds. Next boil a same amount of the water that having temporary hardness. Try making suds with this sample after adding the similar amount of soap solution.
descibe the factors which decidethe broad area of scientific activity?
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if 120g of a 6% sucrose solution are needed, what mass of sucrose is required to prepare the solution?
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