An isothermal CSTR with a first order irreversible reaction A â> B (and rA[mol/(ft3*min)] = - 0.5 CA) has a constant flow rate of 29.0 ft^3/min. The reactor volume is 100 ft3. If the inlet concentration CAi is 7.3 moles/ft^3 at t = 0 and the initial outlet concentration CA is 2.3 moles/ft^3. Required:
Determine the outlet concentration CA after t = 2.9 min

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.