How many molecules following formula 3Al2 (SO4) 3

A student growing a crystal finds that the mass of the crystal decreased from one day to the next day. Why? a. student added to little saturated solution to the crystal growing vessel b.

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As additional KNO3 (s) is added to a saturated solution of KNO3 at constant temperature, the concentration of the solution? (I know it remains the same but why?)

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What is the chemical formula for potassium permanganate?

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HNO3 + H2O > H3O (aq) + NO3 - (aq)

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