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2. Rubbing alcohol is sold as a 70% (v/v) solution of isopropyl alcoholin water. What volume of isopropyl alcohol is used to make 500mL of rubbing alcohol?

given

what is missing

formula

solution

answer ​


Sagot :

Given:

percent by volume = 70%

volume of solution = 500 mL

What is missing:

volume of solute

Formula:

[tex]\text{volume of solute} = \dfrac{\text{percent by volume}}{100\%} \times \text{volume of solution}[/tex]

Solution:

[tex]\text{volume of solute} = \dfrac{70\%}{100\%} \times \text{500 mL}[/tex]

Answer:

volume of solute = 350 mL

[tex]\\[/tex]

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