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3 years ago

A solution is 5.00% by volume of ethanol dissolved in water. How many mL of ethanol are in 500 mL of the solution?

Chemistry

1 answer:

fiasKO [112]3 years ago

8 0

Answer:

$v_{solute}=25mL$

Explanation:

Hello there!

In this case, according to the by-volume concentration of this solution, it is possible for us to use its mathematical definition as shown below:

$\%v=\frac{v_{solute}}{v_{solution}}*100\%$

Thus, given the percent and the volume of the solution, we can solve for the volume of ethanol (solute) as shown below:

$v_{solute}=\frac{\%v*v_{solution}}{100\% }\\\\v_{solute}=\frac{5.00\%*500mL}{100\%}\\\\ v_{solute}=25mL$

Best regards!

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<u>Explanation:</u>

Let the volume of solution of 2.5 M NaCl be 10 mL

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To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

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$M_1\text{ and }V_1$ are the molarity and volume of the concentrated NaCl solution

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Explanation:

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