HomeEngineeringA closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system. 12772. A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.By Admin / September 13, 2025 Yes No ✅ The correct answer is option A.
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