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`180ml` of hydrogen diffuses through a porous membrane in 15 minutes while `120 ml` of `SO_(2)` under identical conditions diffused in 20 minutes. Wha

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`180ml` of hydrogen diffuses through a porous membrane in 15 minutes while `120 ml` of `SO_(2)` under identical conditions diffused in 20 minutes. What is the molecular mass of the hydrocarbon ?
A. 8
B. 16
C. 24
D. 32
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`(r_(1))/(r_(2))=sqrt((M_(SO_(2)))/(M_("hydrocarbon")))(180//15)/(120//20)=sqrt((64)/(M))`
`2=sqrt((64)/(M))=M=16`
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