Answer :
The flask loses molecules at a rate of t = 603.7 sec.
What is Air pressure?
The pressure within Earth's atmosphere is referred to as atmospheric pressure or barometric pressure. The definition of the standard atmosphere is 101,325 Pa, or the same as 1013.25 millibars, 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.
n = PV/RT
n = 5× 10⁵ × 300 × 10⁻⁶/8.314 × (273 + 27)
n = 0.06 moles
N = 6.022 × 10²³ × 0.06
N = 3.62 × 10²² atoms
t = (N/2)/(dN/dt)
t = 3.62 × 10²²/ 2× 3× 10¹⁹
t = 603.7 sec
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