Consider the process in the figure for manufacturing \( B \). The feed to the process is 90 mol% \( A \) and a close-boiling inert component \( I \). At a particular steady-state: - \( B \) product rate is 100 kmol \(h^{-1}\) - Single-pass conversion of \( A \) in the reactor is 50% - Recycle-to-purge stream flow ratio is 10 The flow rate of \( A \) in the purge stream in kmol h^-1, rounded off to 1 decimal place, is ___________