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SAT, 26.11.2021 04:40 asmaamasto

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was.

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A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder...
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