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7 August, 15:43

How many moles of HCL are in 20 ml sample of. 10 M HCL

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  1. 7 August, 19:17
    0
    0.002 moles

    Explanation:

    Concept tested: Molarity

    We are given;

    Volume of HCl as 20 ml or 0.02 L Molarity of HCl solution as 0.10 M

    We are required to calculate the number of moles of HCl

    What is molarity?

    Molarity is the concentration of a solution in moles per liter

    How is it calculated?

    It calculated by dividing number of moles by volume; Molarity = Number of moles : Volume

    To calculate the number of moles we rearrange the formula;

    Moles = Molarity * Volume

    In this case;

    Moles of HCl = 0.10 M * 0.02 L

    = 0.002 moles

    Therefore, the number of moles of HCl is 0.002 moles
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