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What is ∆E for a steady-state system?

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What is ∆E for a steady-state system?

(a) Positive

(b) Negative

(c) Zero

(d) Cannot say

This question was posed to me in exam.

The origin of the question is Energy Balances for Closed, Steady-State Systems topic in section Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering

1 Answer

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Best answer
Right option is (c) Zero

The explanation: Change in internal energy for a steady-state system is always zero.

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