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19 January, 17:14

100cm3 of oxygen pass through a porous plug is 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is? [O = 16, H = 1]

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  1. 19 January, 18:35
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    Answer:12.5secs

    Explanation:

    From the question, we obtained the following information:

    t1 (O2) = 50sec

    M1 (O2) = 16 x 2 = 32g/mol

    M2 (H2) = 2 x 1 = 2g/mol

    t2 (H2) = ?

    t2/t1 = √ (M2/M1)

    t2/50 = √ (2 / 32)

    t2/50 = √ (1 / 16)

    t2/50 = 1 / 4

    Cross multiply

    t2 x 4 = 50 x 1

    Divide both side by 4

    t2 = 50 / 4

    t2 = 12.5secs
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