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200\, \mathrm{Ml} at \mathrm{{O}_{2}(\mathrm{~g})} from a Porous container in \mathrm{200 \, \mathrm{sec} .75 \mathrm{Ml}} at unknown gas  effeuse under the Same condition of Temperature and pressure in \mathrm{250 \, \mathrm{sec} } .Calculate vapour density of unknown gas ?

Option: 1

64


Option: 2

128


Option: 3

144


Option: 4

32


Answers (1)

best_answer

\frac{\mathrm{rO}_{3}}{\text { runtenoun }}=\frac{\frac{v_{1}}{t_{1}}}{\frac{v_{2}}{t_{2}}}=\sqrt{\frac{\text { Muntenourn }}{M \mathrm{O}_{2}}}
\frac{200 \times 250}{800 \times 75}=\sqrt{\frac{\text { Munknouls }}{32}}
\text { 3 }=\sqrt{\frac{\text { Muntunow }}{32}}
q=\frac{\text { Munknoum }}{32}
\text { Munknoum }=32 \times 9=288

\mathrm{V \cdot D=\frac{288}{2}=144}

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