In sparged vessel of area 50 cm and a gas holdup of 3 cubic meters per cubic meters, the flow rate of the gas is 5 cubic meters per second. The value of true gas velocity in meters per second is
(a) 1.11
(b) 2.22
(c) 3.33
(d) 4.44
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The question is from Gas-Liquid Equipments in division Equipment for Gas-Liquid Operations of Mass Transfer