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What is the energy balance of a closed system?

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in Basic Chemical Engineering by (74.6k points)
What is the energy balance of a closed system?

(a) Matter in the system is constant

(b) Energy in the system is constant

(c) Neither energy nor matter is constant

(d) Both of energy and matter are constant

The question was posed to me by my school teacher while I was bunking the class.

My question is based upon Application of the Energy Balance to Closed Systems topic in division Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering

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The correct answer is (a) Matter in the system is constant

To explain I would say: For closed system energy balance, matter in the system is constant.

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