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What is the change in internal energy if 20 joules of heat is released from a system and the system does 50 joules of work on the surroundings?
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∙ 6y ago
-70 Joules
King Dedede
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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?
5.155
What statement about the energy of a phase change is true?
Melting is an endothermic change, because ice absorbs energy from its surroundings as it melts.
Does a compressor change kinetic energy into pressure energy?
into internal energy
How does the energy of a substance change during an exothermic change?
During an exothermic change, such as freezing, the substance releases energy to its surroundings.
If work is don adiabatically on a system will the internal energy increase or decrease?
If work is done adiabatically on a system, the internal energy will increase. This is because adiabatic processes do not involve the exchange of heat with the surroundings, so any work done on the system will directly contribute to an increase in its internal energy.
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?
5.155
What change releases energy into its surroundings?
An exothermic process releases energy into its surroundings.
The system adsorbs energy from its surroundings?
An Endothermic change is the system that absorbs energy from its surroundings.
What energy changes does a electrical heater have?
Electricity energy is converted into internal energy through work. As the internal energy of the heater increases so, too, does its temperature. Energy is then lost to the surroundings through heat transfer. The change in the heater's internal energy is the difference between the work done on the heater and the heat transfer away from it.
When reactants change to products do the chemicals lose or gain energy?
The formation of bonds causes an energy release, while the breaking of bonds causes an absorption of energy. In a combustion reaction c+o2 --> co2, the reactants have a higher internal energy than the products resulting in a negative internal energy because energy is flowing out of the system to the surroundings. However in co2 ---> c+o2, the reactants have a lower internal energy than the products, so the internal energy of the system is positive as energy is flowing into the system from the surroundings.
A system absorbs 640J heat and does work of 260J the change in internal energy of the system will be?
the system has been given internal energy of 640j and the work system does on surroundings is 260j. therefore by first law of thermodynamics the internal energy of system increases by (640-260=380)j.
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
When a solid changes to liquid will it gain or lose energy?
It looses energy to the surroundings. When bindings brakes, energy is released.
A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10 2 kJ of work on the system What is the change in internal energy of the system?
3.0 x10 1 kj A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10³ kJ of work on the system. What is the change in internal energy of the system? --- 224 kj
What is an ednothermic change?
An endothermic change is a process that removes heat energy from its surroundings.
What is a exothermic change?
It is when something releases its energy to its surroundings do to a system.
What statement about the energy of a phase change is true?
Melting is an endothermic change, because ice absorbs energy from its surroundings as it melts.
