Final answer:
To determine the molar concentration, or molarity, one needs to know the mass of the solute and the volume of the solution, then calculate the number of moles of solute and divide by the volume of the solution in liters.
Step-by-step explanation:
The question is asking to determine the molar concentration of a solution within potato cores, which implies knowing the amount of substance in moles present in a given volume of solution. The molar concentration, also known as molarity, is represented by the unit moles per liter (mol/L). To calculate the molarity of the solution, one typically needs to know the mass of the solute and the volume of the solution.
To illustrate the process, consider a step where you have a volume (V₂) containing the desired moles of solute (M₂) measured from a stock solution of known concentration. To calculate the molarity, use the formula molarity (M) = moles of solute (n) / volume of solution in liters (V). For example, if you have 42.8 grams of KBr and want to find the molarity in 1.00 L of water, you would divide the number of moles of KBr (calculated using its molar mass) by the volume of the solution in liters.
Another important concept is molality, which is the moles of solute per kilogram of solvent. While molality is a different measure, it does not depend on the volume of solution and hence isn't used to calculate molarity directly. However, understanding both can be important in various chemical calculations.