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What is an open system in enviromental science?
An open system is one that exchanges both matter and energy with its surroundings. For example, suppose Earth is a system and the universe is its surroundings. Earth is an open system, since it can exchange both energy and matter with its surroundings.
Which one of the following conditions would always result in an increase in the internal energy of a system?
the system gains heat and does work on the surroundings
Why does a ball leak air even when it has a tiny hole?
Because the pressure inside the ball is greater then outside the ball. When you poke even a small hole in a ball you connect the ball and the outer surroundings (air) into one system. That system them tries to get toward equilibrium where the pressure is the same in the ball and its surroundings.
What goes cold and then goes hot?
hot on the 19th od April
When a solid changes to liquid will it gain or lose energy?
It looses energy to the surroundings. When bindings brakes, energy is released.
What is the system which energy but not matter is exchanged with the surroundings?
An isolated system is a system in which energy but not matter is exchanged with the surroundings. This means that the system is closed to matter transfer, but allows for the exchange of energy with its surroundings.
What is an absorption of heat from the surroundings to the system?
Absorption of heat from the surroundings to the system is known as endothermic process. During this process, the system gains heat energy from the surroundings, causing a temperature increase in the system while cooling the surroundings. This is in contrast to exothermic processes, where the system releases heat to the surroundings.
What is a system plus its surroundings called?
A system plus its surroundings is referred to as the "universe" in thermodynamics. The system is the specific part of the universe being studied, while the surroundings include everything outside the system that can interact with it. The interactions between the system and its surroundings are crucial for understanding energy transfer and chemical reactions.
When is a thermodynamic work said to be positive?
A thermodynamic work is said to be positive when the system does work on the surroundings. This occurs when energy is transferred from the system to the surroundings, resulting in a decrease in the internal energy of the system.
What signs on q and w represent a system that is doing work on the surroundings as well as losing heat to the surroundings?
Positive work done on the surroundings by the system (q>0) and negative heat transferred from the system to the surroundings (w<0).
Why is it important to define the system and the surroundings?
You can define a system as part of the universe on which you focus your attention. The surroundings include everything else in the universe. In thermochemical experiments, you can consider the region in the immediate vicinity of the system as the surroundings. A major goal of thermochemistry is to examine the flow of heat between the system and its surroundings.
What is chemical system?
A chemical system consists of the system and the surroundings. If you're dealing with a solution in a beaker, the solution would be the system and the beaker and air would be the surroundings.
What is the work done by the system according to the sign convention?
The work done by the system is positive if the system does work on its surroundings, and negative if work is done on the system by the surroundings.
What an open system?
A system that can exchange matter with its surroundings
What is an open system in enviromental science?
An open system is one that exchanges both matter and energy with its surroundings. For example, suppose Earth is a system and the universe is its surroundings. Earth is an open system, since it can exchange both energy and matter with its surroundings.
What is the difference between isolated system and non flow adiabatic system?
An isolated system is a system that doesn't not interact with its surroundings. No interactions at all. No work, no heat transfer. An adiabatic system is one that does not permit heat transfer between the system and its surroundings. It can do work on the surroundings.
What is it called when a substance releases energy to its surroundings?
There are two ways that a substance ( called the System ) may release energy to the Surroundings :( 1 ) Heat may be released by heat transfer from the System to the Surroundings. Heat transfer from the System to the Surroundings requires the System temperature to exceed the temperature of the Surroundings and the presence of one or more heat transfer modes ( conduction, convection, and/or radiation.( 2 ) Work done by the System of on the Surroundings corresponding to a force moving through a distance, such as when the substance expands. Substance confined to a cylinder with a piston may expand, doing work on the Surroundings.
