Question

12 which system permits the exchange of only energy to cross its border? isolated system closed system open system universal system skip 11/12 complete

Explanation:

In thermodynamics, an isolated system has no exchange of matter or energy with the surroundings. A closed system allows energy exchange but not matter exchange. An open system allows both matter and energy exchange. There is no such standard concept as a universal system in this context.

Answer:

B. Closed system