A vessel containing $5\, litres$ of a gas at $0.8 \,pa$ pressure is connected to an evacuated vessel of volume $3$ litres. The resultant pressure inside will be ...... $pa$ (assuming whole system to be isolated)
Medium
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(b) $0.8 \times 5 = P \times (3 + 5) \Rightarrow P = 0.5\;pa$
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