200 ml of O_2 gas maintained at 700mm pressure and 250ml of N_2 gas maintained at 720mm pressure are put together in one litre flask. If the temperature is kept constant, the final pressure of the mixture in mm is

200 ml of O_2 gas maintained at 700mm pressure and 250ml of N_2 gas ma

1.	200 ml of O_2 gas maintained at 700mm pressure and 250ml of N_2 gas maintained at 720mm pressure are put together in one litre flask. If the temperature is kept constant, the final pressure of the mixture in mm is
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