An open system is that system in which

Options

A. there is not exchange of energy with the msurroundings
B. there is exchange of mass and energy with the surroundings
C. there is no exchange of mass or energy with the surroundings
D. there is exchange of mass with the surroundings

Explanation

**Step-by-Step Text Solution:**

1. **Understanding System Types**:
- In thermodynamics, systems are classified into three main types: open systems, closed systems, and isolated systems.

2. **Definition of Open System**:
- An open system is defined as one where both energy and matter can be exchanged with the surroundings. This means that substances can enter or leave the system, and energy can also be transferred in the form of heat or work.

3. **Comparison with Other Systems**:
- **Closed System**: In a closed system, only energy can be exchanged with the surroundings, but matter cannot. For example, a sealed container where heat can escape but no material can enter or exit.
- **Isolated System**: An isolated system is one where neither energy nor matter is exchanged with the surroundings. An example would be a perfectly insulated thermos bottle.

4. **Example of an Open System**:
- A practical example of an open system is an open beaker of water. In this scenario, water can evaporate (matter is leaving the system), and heat can be transferred to the surroundings (energy is being exchanged).

5. **Conclusion**:
- Therefore, the correct statement regarding an open system is that it is a system where there is an exchange of both mass and energy with the surroundings.

**Final Answer**: An open system is one in which there is an exchange of mass and energy with the surroundings.

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