You have a stock NaCl solution of 8 g/L.  You want to prepare 357 mL of a 5 mg/L NaCl solution.  How many mL of the stock solution will you need?  Give your answer with two digits after the decimal

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Chapter3: Measurement And Chemical Calculations
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Problem 64E: Exactly 1 liter of a solution contains 31.4 grams of a certain dissolved substance. What mass in...
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You have a stock NaCl solution of 8 g/L.  You want to prepare 357 mL of a 5 mg/L NaCl solution.  How many mL of the stock solution will you need?  Give your answer with two digits after the decimal

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Given:

The concentration of the stock NaCl solution = 8 g/L

We have to find the volume of the stock solution (in mL) that would be needed to prepare 357 mL of a 5 mg/L NaCl solution.

 

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what would the answer be with two decimal places? 

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