Ethanol is used widely as a solvent in laboratories for various chemical reactions. A laboratory technician takes 50 point 0 milliliters of ethanol and dilutes it to 100 point 0 milliliters with distilled water. What is the percentage concentration by volume of the resulting solution? Use vol percent is equal to volume of solute over volume of solution times 100
Use volume percent = (volume of ethanol ÷ total volume of solution) × 100. Substituting the values gives (50.0 mL ÷ 100.0 mL) × 100 = 50.0%. Therefore, the correct choice is 50.0 percent.
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