An unsteady state system, the flow in the rate of A is 12 mole/s, what is the flow out rate of B if the accumulation was 18 mole in 3 seconds?(a) 4 mole/s(b) 6 mole/s(c) 8 mole/s(d) 9 mole/sThe question was asked by my college professor while I was bunking the class.My doubt stems from Steady-State and Unsteady-State Systems topic in portion Introduction to Material Balances of Basic Chemical Engineering

An unsteady state system, the flow in the rate of A is 12 mole/s, what

1.	An unsteady state system, the flow in the rate of A is 12 mole/s, what is the flow out rate of B if the accumulation was 18 mole in 3 seconds?(a) 4 mole/s(b) 6 mole/s(c) 8 mole/s(d) 9 mole/sThe question was asked by my college professor while I was bunking the class.My doubt stems from Steady-State and Unsteady-State Systems topic in portion Introduction to Material Balances of Basic Chemical Engineering
Answer» Correct CHOICE is (B) 6 mole/s To explain: Flow RATE of B = 12 – 18/3 = 6 mole/s.

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