# How many moles are present in a 1.50*L volume of a semi-molar solution?

Jul 11, 2017

If you have a $1500 \cdot m L$ of a $0.50 \cdot m o l \cdot {L}^{-} 1$ solution, you have $0.75 \cdot m o l$ in solution........

#### Explanation:

$\text{Molarity"="Concentration"="Moles of solute"/"Volume of solution}$

And of course $\text{Moles of solute"="Mass of solute"/"Molar mass of solute}$......

But we don't have the molar mass of the solute, and we are guessing that a $\text{semi molar solution}$ $=$ $0.50 \cdot m o l \cdot {L}^{-} 1$.