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QUESTION
During chemistry, Dan mixes two clear, colorless solution and mixing them produces a yellow precipitate in a clear, colorless final solution as shown by the chemical equation. Pb(NO3)2(aq) + 2KI(aq)
During chemistry, Dan mixes two clear, colorless solution and mixing them produces a yellow precipitate in a clear, colorless final solution as shown by the chemical equation. Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) What physical evidence indicates that there has been a chemical reaction? A) The solution changes color. B) Precipitate formation occurs. C) The beaker changes temperature. D) Gas bubbles form during the reaction.
