First slide

Thermodynamic processes

Question

A vessel containing 5 litres of gas at 0.8m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside will be [Assuming whole lose isolated]

Moderate

A

2m
B

0.5m
C

$\frac{3}{4} m$
D

3m

Solution

$\begin{array}{l} P_{1} V_{1} = P_{2} V_{2} \\ 0.8 \times 5 = P_{2} (5 + 3) \\ P_{2} = 0.5 m \end{array}$

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