1.

Total pressure observed after opening the stopcock is [neglecting the volume of the tube connecting the two bulbs]

Answer»

1.33 ATM
3 atm
0.3 atm
0.75 atm

Solution :Total initial MOLES = final moles.
`(0.1 xx 2)/(RT) + (0.2 xx 1)/(RT) = (P xx 0.1)/(RT) + (P xx 0.2)/(RT)`
`implies P = (0.4)/(0.3) = 1.33 atm.`


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