Use the References to access important values if needed for this question. A solution contains 9.86x10-³ M lead acetate and 1.40x10-² M nickel(II) nitrate. Solid potassium carbonate is added slowly to this mixture. A. What is the formula of the substance that precipitates first? formula = B. What is the concentration of carbonate ion when this precipitation first begins? [CO3²-] = M

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