0
What else can I help you with?
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).
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.
Can work done on a system decrease its thermal energy?
Yes. As an example: if you define a refrigerator as your system, the work done on the system causes heat to be expelled from the system to the surroundings. The net heat expelled will be equal to the work input plus the decrease in its thermal energy.
A system that does no work but which receives heat from the surroundings has?
A system that does no work but receives heat from the surroundings is referred to as a heat engine. This is because even though the system is not performing any mechanical work, it is still able to convert some of the heat energy it receives into other forms of energy, such as thermal energy.
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.
A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10?
The surroundings do 4.20 x 10^3 J of work on the system, as work done by the surroundings is considered positive. The change in internal energy of the system is 196 kJ - 4.20 kJ = 191.8 kJ. This change includes the energy flow as heat and work.
A sample of gas in a syringe releases heat go its surroundings while the plunger us pulled out what are the correct signs of heat and work in this change?
In this scenario, the gas is doing work on its surroundings, so the work is negative. Since heat is being released from the gas to its surroundings, the heat is also negative. The sign convention typically defines work done by the system as negative and heat released from the system as negative.
What is the change in the internal energy of a system that absorbs 2.500J of heat and that does 7.655J of work on the surroundings is?
The change in internal energy is the sum of heat added to the system and work done by the system on the surroundings. So, the change in internal energy is 2.500J (heat absorbed) - 7.655J (work done), resulting in a change of -5.155J.
How can one determine if work has been carried out on or by the system in the context of chemistry?
One can determine if work has been done on or by a system in chemistry by examining changes in the system's energy, such as changes in temperature, pressure, or volume. Work is typically done on a system when energy is transferred to it, causing changes in its surroundings. Conversely, work is done by a system when it transfers energy to its surroundings, resulting in changes within the system.
What you conclude from adiabatic in joule experment?
In an adiabatic experiment, the system is isolated from its surroundings, so there is no heat exchange with the surroundings. The decrease in internal energy of the system is equal to the work done on the system. This relationship can be expressed by the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.
A system gives off 196KJ of heat to the surroundings and the surroundings do 420 KJ of work on the system What is the change in internal energy of the system?
Δ E = -196 kj + 420 kJ = 224 kJ
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
