Question C2: Plug-flow reactor

The following irreversible, first-order, gas phase reaction occurs at a constant temperature T, and a constant

pressure P, in a plug-flow reactor, of volume 2.0 m².

A ⇒ 2B

Under these conditions, the rate constant is 0.69 min¹².

What volume flow rate of A is required for its conversion to be 99% ?