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In the given tank, there are two feeds and one output. Consider a 2 hour operation; the feed rates are 4000 kg/hr and 6000 kg/hr. The accumulated material inside the tank is 2000 kg. What is the output rate kg/hr of the material?

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In the given tank, there are two feeds and one output. Consider a 2 hour operation; the feed rates are 4000 kg/hr and 6000 kg/hr. The accumulated material inside the tank is 2000 kg. What is the output rate kg/hr of the material?

(a) 9000

(b) 8000

(c) 7000

(d) 6000

I had been asked this question by my school teacher while I was bunking the class.

Question is from Material Balances -I in division Material Balances of Chemical Process Calculation

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The correct answer is (a) 9000

Explanation: Input = output, Take a basis: 2 hour.

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