Calculate the volume in milliliters of 7.1 % (v/v) ethanol solution that contain

Question

Calculate the volume in milliliters of 7.1 % (v/v) ethanol solution that contains 275 mL of ethanol. Express your answer to two significant figures and include the appropriate units. ?% Value Units Submit x Incorrect: Try Again: 4 attempts remaining The conversion factor needed in this calculation comes from the concentration of the solution, which can be written as the equality 100 mL of solution 7.1 ml of ethanol. You are also given a volume of 27.5 mL of ethanol. Set up the conversion so that mailliliters of ethanol cancel out and mililiters of solution remain

Explanation / Answer

% V/V = (volume of ethanol / total volume) x 100

7.1 = (27.5 / total volume) x 100

27.5 / total volume = 0.071

total volume = 387 mL

volume of solution = 387 mL

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