Question

Carbon monoxide gas effuses from a container in 3.8 minutes, The same quantity of an unknown gas effuses in 6.0 minutes under the same conditions. What is the molar mass of the unknown?

Answer 1

Answer:

A sample of an unknown gas effuses in 11.1min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42min . What is the molar mass of the unknown gas?

Explanation:

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Answer 2

Answer: The molar mass is 17.65g

Explanation: Carbon monoxide gas effuses from a container is 3.8minutes.

Unknown gas effuses in 6.0minutes.

Find the molar mass of the unknown.

Solution-

$\frac{effusion rate A}{effusion rate B}=\sqrt{\frac{mwB}{mwB} }$

$\frac{effusion rate Co_2}{effusion rate x}=\sqrt{\frac{mwx}{mwCo_2} }$

$\frac{3.8}{6.0}=\sqrt{\frac{x}{44.01g/mol} }$

$(0.6334)^2=\frac{x}{44.01}$

$x=17.65g$

Hence, the molar mass is $17.65g$

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