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  • Calculate Molarity: Potassium Chloride Solution - Step-by-Step Guide
    Here's how to calculate the molarity of the potassium chloride solution:

    1. Determine the molar mass of potassium chloride (KCl):

    * Potassium (K) has a molar mass of 39.10 g/mol

    * Chlorine (Cl) has a molar mass of 35.45 g/mol

    * Molar mass of KCl = 39.10 g/mol + 35.45 g/mol = 74.55 g/mol

    2. Convert the mass of KCl to moles:

    * Moles of KCl = (mass of KCl) / (molar mass of KCl)

    * Moles of KCl = 93.5 g / 74.55 g/mol = 1.25 mol

    3. Convert the volume of the solution to liters:

    * Volume of solution = 500 ml = 0.5 L

    4. Calculate the molarity (M):

    * Molarity (M) = (moles of solute) / (volume of solution in liters)

    * Molarity (M) = 1.25 mol / 0.5 L = 2.5 M

    Therefore, the molarity of the potassium chloride solution is 2.5 M.

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