Question

44.8% of a 250. mL acid solution is used in an experiment, what volume of acid (in mL) was used?

Answer 1

112 mL

Step-by-step explanation:

The formula for percent by volume is

`\text{Percent by volume} = \frac{\text{Volume of solute}}{\text{Volume of solution}}* 100 \, \%`

If you have 250 mL of a solution that is 44.8 % v/v,

`\begin{array}{rcl}44.8\, \% & = & \frac{\text{Volume of solute}}{\text{250 mL}}* 100 \, \%\\\\44.8 * \text{ 250 mL} & = & \text{Volume of solute} * 100\\\text{Volume of solute} & = & \frac{44.8 * 250\text{ mL}}{100}\\\\ & = & \textbf{112 mL}\\\end{array}`