Given that,
Pressure = 425 Kpa
Pressure in millimeter of mercury = ?
Since, we know that,
1 Kpa = 7.5 millimeter of mercury
425 Kpa = 425 *7.5 millimeter of mercury
425 Kpa = 3187.76 millimeter of mercury.
The pressure of container filled with oxygen is 3187.76 millimeter of mercury.