What volume of ethyl alcohol should be added to water to prepare a 600 mL solution having 12% v/v concentration?

Q. What volume of ethanol should be added in 250 ml water to obtain a solution containing 80%(v/v) of solvent.

Q. A student wants to prepare a solution of acetone and water having $30\%$ v/v. If $6mL$ of acetone has been taken then how much water must be added to get the desired concentration?
[2 Marks]

Q. To get a 12% V/V of alcohol solution, how much water (in mL) should be mixed with 12 mL of alcohol?

Q. The volume of ethyl alcohol (density $1.15g/cc$) that has to be added to prepare $100cc$ of $0.5M$ ethyl alcohol solution in water is :

Q. What volume of rubbing alcohol is required to add in water to prepare $250$ mL of $70\%$ (v/v) solution?