calculate the number of molecules present in 1 mililitre of hydrogen gas at stp?

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  • 1 month ago

    At STP, 1 mol of gas = 22.4L , 1ml = 10^-3L

    1ml of Hydrogen = 1 x 10^-3/22.4= 4.464 x 10^-5

    molecular = 4.464 x 10^-5 x 6.022 x 10^23

                     = 2.688 x 10^19 molecules

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