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Q. |
An open system |
A. | Is a specified region where transfers of energy and/or mass take place |
B. | Is a region of constant mass and only energy is allowed to cross the boundaries |
C. | Cannot transfer either energy or mass to or from the surroundings |
D. | Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant |
E. | None of the above |
Answer» D. Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant |
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