A closed tank contains 2.0 m of SAE 30 oil (s = 0.89), 1.5 m of water (y = 9790 N/m^3), 25 cm of mercury ( s = 13.6), and an air space on top, all at 20 °C. If the pressure at the bottom is 75 kPa, what is the pressure in the air space in Pascal unit? Write your answer to the nearest one decimal place. %D

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