Question

if 0.184 moles of nacl are dissolved in a 250.0 ml solution, what is the concentration of the nacl solution? answer: m

Explanation:

Step1: Convert volume to liters

The volume of the solution is $V = 250.0\ mL$. Since $1\ L=1000\ mL$, then $V = 250.0\ mL\times\frac{1\ L}{1000\ mL}=0.2500\ L$.

Step2: Calculate molarity

The formula for molarity $M$ is $M=\frac{n}{V}$, where $n$ is the number of moles and $V$ is the volume of the solution in liters. Given $n = 0.184$ moles and $V=0.2500\ L$, then $M=\frac{0.184\ mol}{0.2500\ L}=0.736\ M$.

Answer:

$0.736$