An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?
Technically, none since there are no mm in a mL.
65% alcohol (v/v) means 65 mL alcohol in 100 mL solution. It must be 35% water.
That is 35 mL H2O/100 mL so in 95 mL we have 35 x (95/100) = ??
To find the amount of water in a 95 mL sample of a 65% (v/v) rubbing alcohol solution, we first need to understand that the given percentage refers to the volume of rubbing alcohol in the solution.
The remaining percentage would then represent the volume of water in the solution. In this case, since it is a 65% (v/v) solution, the water content would be 100% - 65% = 35%.
To calculate the volume of water, we can use the following formula:
Volume of water = (Percentage of water / 100) x Total volume
In this case, the total volume is 95 mL, and the percentage of water is 35%.
Calculating the volume of water:
Volume of water = (35 / 100) x 95 mL
= 0.35 x 95 mL
= 33.25 mL
Therefore, there are approximately 33.25 milliliters of water in a 95 mL sample of a 65% (v/v) rubbing alcohol solution.