if the percent (mass/volume) for the solute is 4.0% and the volume of the solution is 750ml, what is the…

Explanation:

Step1: Recall the mass - volume percent formula

The formula for mass/volume percent ($% (m/v)$) is $% (m/v)=\frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}}\times100$. We need to solve for the mass of the solute. Rearranging the formula gives $\text{mass of solute}=\frac{% (m/v)\times\text{volume of solution}}{100}$.

Step2: Substitute the given values

We are given that $% (m/v) = 4.0%$ and $\text{volume of solution}=750\ mL$. Substituting these values into the formula: $\text{mass of solute}=\frac{4.0\times750}{100}$. First, calculate $4.0\times750 = 3000$. Then, $\frac{3000}{100}=30\ g$.

Answer:

30 g