Question

the teacher prepare a solution by dissolving 40ml of ethanol in a 20ml of water.answer the following question below​

Answer 1

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$volume \: of \: solute = 40ml \\ volume \: of \: solvent = 20ml \\ total \: volume \: of \: solution = 40 + 20 = 60ml \\ concentration = \frac{volume \: of \: solute}{volume \: of \: solution} \times 100 \\ = \frac{40}{60} \times 100 \\ = \frac{2}{3} \times 100 \\ = \frac{200}{3} \\ 66.66\%$

Answer 2

Answer:

your answer is 66.66% ...........