If the exchange of matter and energy both takes place between the system and the surroundings, it is known as:
Correct answer: A. Open system
- A. Open system
- B. Closed system
- C. Isolated system
- D. Heterogeneous system
Explanation
An open system is one where both matter and energy can be exchanged with the surroundings. This is in contrast to a closed system, which allows only energy exchange, and an isolated system, which does not allow the exchange of matter or energy. A heterogeneous system refers to a system composed of different phases and does not inherently relate to the exchange of matter and energy.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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