A Student Dissolved 3

question 52

Multiple Choice

A student dissolved 3.00 g of Co(NO₃) ₂ in enough water to make 100.mL of stock solution.He took 4.00 mL of the stock solution and then diluted it with water to give 275.mL of a final solution.How many grams of NO₃^- ion are there in the final solution?

• A)0.0148 g
• B)0.0296 g
• C)0.0407 g
• D)0.0813 g

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