An unsteady-state system, with 6 liters as initial amount of water in the vessel, water flow in rate is 2 liters/ s and flow out rate is 4 liters/s, what will be the amount of water in the vessel after 1 second?(a) 2 liters(b) 4 liters(c) 6 liters(d) 8 litersI have been asked this question during an internship interview.Query is from Steady-State and Unsteady-State Systems in chapter Introduction to Material Balances of Basic Chemical Engineering

An unsteady-state system, with 6 liters as initial amount of water in

1.	An unsteady-state system, with 6 liters as initial amount of water in the vessel, water flow in rate is 2 liters/ s and flow out rate is 4 liters/s, what will be the amount of water in the vessel after 1 second?(a) 2 liters(b) 4 liters(c) 6 liters(d) 8 litersI have been asked this question during an internship interview.Query is from Steady-State and Unsteady-State Systems in chapter Introduction to Material Balances of Basic Chemical Engineering
Answer» Correct choice is (B) 4 liters For explanation: Total AMOUNT of WATER reduced from the vessel in 1 second = (4 – 2)*1 = 2 liters, => Final amount of water = 6 – 2 = 4 liters.

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