What is the molarity of \[SO_{4}^{2-}\] ion in aqueous solution that contain 34.2 ppm of \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]? (Assume complete dissociation and density of solution 1 g/mL)

What is the molarity of \[SO_{4}^{2-}\] ion in aqueous solution that c

1.	What is the molarity of \[SO_{4}^{2-}\] ion in aqueous solution that contain 34.2 ppm of \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]? (Assume complete dissociation and density of solution 1 g/mL)
A.	\[3\times {{10}^{-4}}M\]
B.	\[2\times {{10}^{-4}}M\]
C.	\[{{10}^{-4}}M\]
D.	None of these
Answer» B. \[2\times {{10}^{-4}}M\]

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What is the molarity of \[SO_{4}^{2-}\] ion in aqueous solution that contain 34.2 ppm of \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]? (Assume complete dissociation and density of solution 1 g/mL)

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