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A mixture of 2 moles of NH(3) and 3 mole...

A mixture of 2 moles of `NH_(3)` and 3 moles of `N_2` exert a pressure of 500 mm Hg pressure in a rigid container. If one mole of HCl gas is pumped into the flask what may be the resultant pressure ? (Ignore temperature change)

A

200 mm

B

400 mm

C

500 mm

D

250 mm

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