Q
A closed system is one in which_________________________?
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A
A. Mass does not cross boundaries of the system, though energy may do so
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B
B. Mass crosses the boundary but not the energy
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C
C. Neither mass nor energy crosses the boundaries of the system
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D
D. Both energy and mass cross the boundaries of the system
Correct Answer:
A. A. Mass does not cross boundaries of the system, though energy may do so
