\( X \mathrm{~mL} \) of \( \mathrm{H}_{2} \) gas effused through a hole in a container in \( 5 \...

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\( X \mathrm{~mL} \) of \( \mathrm{H}_{2} \) gas effused through a hole in a container in \( 5 \mathrm{~s} \). The time taken for the effusion of the same volume of the gas specified below under identical conditions is
(A) \( 10 \mathrm{~s}: \mathrm{He} \)
(B) \( 20 \mathrm{~s}^{2} \mathrm{O}_{2} \)
(C) \( 25 \mathrm{~s}: \mathrm{CO} \)
(D) \( 55 \mathrm{s:CO} \)
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