What is the molar concentration of a solution prepared by dissolving 0.100 mole of potassium nitrate in enough water to prepare 4.00102 ml of the solution?

To find the molar concentration (molarity) of the solution, you can use the formula:

[ \text{Molarity} (M) = \frac{\text{moles of solute}}{\text{volume of solution in liters}} ]

First, convert the volume from milliliters to liters:

[ 4.00102 , \text{ml} = 0.00400102 , \text{L} ]

Now, plug in the values:

[ M = \frac{0.100 , \text{moles}}{0.00400102 , \text{L}} \approx 24.98 , \text{M} ]

Thus, the molar concentration of the solution is approximately 24.98 M.