Question

what is the molar concentration of a solution that contains 7.0 mol nacl in a total volume of 2.0 l? ? (mol/l)

Explanation:

Step1: Recall Molarity Formula

Molarity ($M$) is calculated as moles of solute divided by volume of solution in liters: $M = \frac{n}{V}$.

Step2: Substitute Values

Given $n = 7.0\ \text{mol}$ and $V = 2.0\ \text{L}$, substitute into the formula: $M = \frac{7.0\ \text{mol}}{2.0\ \text{L}}$.

Step3: Perform Calculation

Divide 7.0 by 2.0: $\frac{7.0}{2.0} = 3.5$.

Answer:

3.5