how many moles of kcl must be dissolved in 0.5 l of solution to produce a 25 m solution

Explanation:

Step1: Recall molarity formula

Molarity ($M$) = $\frac{n}{V}$, where $n$ is the number of moles and $V$ is the volume of the solution in liters. We need to find $n$, and we know that $M = 25$ M and $V=0.5$ L.

Step2: Rearrange the formula to solve for $n$

$n = M\times V$

Step3: Substitute the given values

$n=25\ \text{mol/L}\times0.5\ \text{L}$ $n = 12.5$ mol

Answer:

12.5