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  • A large cylinder of helium filled of 2000 mm of Hg had a small orifice through which helium escaped into evacuated space at the rate of 6.4 moles/ hour. How long would it take for 10 mole

A large cylinder of helium filled of 2000 mm of Hg had a small orifice through which helium escaped into evacuated space at the rate of 6.4 moles/ hour. How long would it take for 10 mole of CO to leak through a similar orifice if the CO were confined at the sane pressure?

Option: 1

2.1 hour


Option: 2

4.2 hours


Option: 3

5.6 hours


Option: 4

11.2 hours.


Answers (1)

best_answer

\mathrm{ \frac{{r_{He}}}{r_{C O}}=\sqrt{\frac{M_{C O}}{M_{H e}}}=\sqrt{\frac{28}{4}}=2.65 }
\mathrm{ \Rightarrow r_{C O}=\frac{r_{He}}{2.65}=\frac{6.4}{2.65}=2.4 \mathrm{~mol} / \mathrm{hr} }
\mathrm{ \Rightarrow t=\frac{10}{2.4} \approx 4.2 }

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Sayak

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