A camera with a volume of 1000 m3 contains O2 (mass=5.3135 x 20^-26 kg/molecules) at a temperature T=500 K and a pressure P=2.50 atm (1 atm-1.011325 x 10^5 Pa). The average velocity of the gas molecules is = 575.2 m/2. If the container opens a hole whose area is 0.01 m^2, calculate the number of oxidene molecules escaping through this hole per second. Also calculate the pressure (in atm) that the gas will have in the chamber after 500 seconds of gas leakage per office.