With sulfuric acid corrosion, carbon steel corrosion rates increases significantly if the flow velocity exceeds about ________m fps or at acid concentrations below _________.

With sulfuric acid corrosion, carbon steel corrosion rates increases significantly if the flow velocity exceeds about m fps or at acid concentrations below _.

With sulfuric acid corrosion, carbon steel corrosion rates increases significantly if the flow velocity exceeds about ________m fps or at acid concentrations below _________.
A . 6-9, 80%
B . 5-7, 75%
C . 2-3, 65%
D . 4-6, 85%

Answer: C

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