Comprehension The figure given below shows three glass chambers that are connected by valves of ...

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Comprehension
The figure given below shows three glass chambers that are connected by valves of negligible volume. At the outset of an experiment, the valves are closed and the chambers contain the gases as detailed in the diagram. All the chambers are at the temperature of \( 300 \mathrm{~K} \) and external pressure of \( 1.0 \mathrm{~atm} \).
Suppose that after both valves are opened, the entire apparatus is cooled to lower the final internal pressure to 1.0 atm. What is the contribution of \( \mathrm{N}_{2} \) gas to this final pressure?
(a) \( 0.40 \mathrm{~atm} \)
(b) \( 0.35 \mathrm{~atm} \)
(c) \( 0.30 \mathrm{~atm} \)
(d) \( 0.25 \mathrm{~atm} \)
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