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Q.

The stop cock connecting two bulbs of volume 4 litre and 8 litre containing an areal gas at 7

atm and 6 atm respectively. Is opened. What is the final pressure in the two bulbs if the

temperature remains the same 

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a

700.3 kPa

b

500.5 kPa

c

641.725 kPa

d

625.3 kPa

answer is A.

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Detailed Solution

P = p1v1 + p2v2v1 + v2 = (4 5 7) + (8 × 6)4 + 8 = 7612 = P = 6.33 atm

P = 6.33 × 10.1325 [1 atm = 101. 325 kpal]; P = 641.725 kpa

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