Question

what is a closed system.​

Answer 1

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A closed system is a physical system that does not allow certain types of transfers (such as transfer of mass in or out of the system), though the transfer of energy is allowed. The specification of what types of transfers are excluded varies in the closed systems of physics, chemistry or engineering.

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Answer 2

Answer:

A closed system is a type of thermodynamic system where mass is conserved within the boundaries of the system, but energy is allowed to freely enter or exit the system. In chemistry, a closed system is one in which neither reactants nor products can enter or escape, yet which allows energy transfer (heat and light)

Explanation: