Question 9 A student is attempting to identify the anion in an unknown solid. The student first dissolves the solid in aqueous solution, and then adds aqueous barium nitrate. A solid product forms. The student then adds hydrochloric acid, which causes the solid to dissolve. Which of the following anions might be in this unknown sample? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Phosphate Nitrate Carbonate d Sulfate e Chloride

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