Which of the three types of systems best characterize a fish

Which of the three types of systems best characterize a fish tank?(closed, open )

Solution

A fish tank is considered to be an open system. This is due to the following reasons

1. Water can be added or removed from the tank, this means mass transfer can take place.

2. The water in the tank can be heated or cooled, this means energy transfer can take place.

According to the definition, open system is a system where both mass and energy transfer can take place.