The closed cylinder in figure 3.100 has a freely moving piston separating chambers 1 and 2. Chamber 1 contains 25 mg of N 2 and chamber 2 contains 40 mg of helium. When equilibrium is established, w

Question

The closed cylinder in figure 3.100 has a freely moving piston separating chambers 1 and 2. Chamber 1 contains 25 mg of N $_{2}$ and chamber 2 contains 40 mg of helium. When equilibrium is established, what is the ratio $\frac{L _{1}}{L _{2}}$ ? What is the ratio of the number of moles of N $_{2}$ to the number of moles of He? (Molecular weights of N $_{2}$ and He are 28 and 4.)

TestHub · Accepted Answer

At equilibrium both gases have equal P and T , so V ∝ n and L 2 ​ L 1 ​ ​ = n 2 ​ n 1 ​ ​ . n 1 ​ = 28 25 ​ = 0.893 and n 2 ​ = 4 40 ​ = 10 (same units), so the ratio is 0.0893 .

Physics - Heat & Thermo Question with Solution | TestHub

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