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10 May, 18:46

What is the molarity of a solution made with 298g of potassium chloride dissolved in enough water to make 2L of solution?

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  1. 10 May, 22:17
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    2 M

    Explanation:

    The equation for molarity is "M = moles/liters"

    Potassium chloride's atomic mass is 74.55, meaning one mole of KCl is equal to 74.55g. In the equation, 298g of KCl is being used. To find out how many moles this is, multiply 298g of KCl by (1 mol/74.55g of KCl) to get 4.0 moles. Now you can use the equation for molarity.

    M = 4.0 moles/2 Liters
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