A rectangular tank is split in the middle with a nonpermeable wood block 6.2cm thick that separates dry air ( 21% oxygen and 79% nitrogen, left) and modified air containing 67.1% oxygen, the rest is nitrogen (right). A cylindrical horizontal hole with diameter 2.8cm is present in the wood block but is currently covered by a plate. If the cover plate is suddenly removed, at what rate is oxygen gas diffusing from right to left? The system temperature is held constant at 38.1C and the overall pressure is 1atm. 2.30g/h1.35g/h3.19g/h7.20g/h1.80g/h