# A chemist prepares a solution by dissolving 3.533 g of NaNO3 in enough water to make 200 mL of solution. What molar concentration of sodium nitrate should appear on the label? If 275 mL?

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Answer in units of Molarity.

Answer in units of Molarity.

##### 1 Answer

#### Explanation:

Since we have grams of

So.

Now we just need to find the liters of solution. Since we have

Now we have all the values needed to find molarity,

So to summarize, convert grams of sodium nitrate to moles and convert milliliters of solution to liters of solution, then divide moles by liters to find molarity.

Make sure to do the math yourself, though, just to make sure I didn't make any calculator errors!