What is the energy balance to open system?
(a) Energy in the system is constant
(b) Matter in the system is constant
(c) Matter is constant energy is variable
(d) Both matter and energy are variable
I have been asked this question in semester exam.
Question is taken from Application of the Energy Balance to Open Systems topic in chapter Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering