Respuesta :
309J is the change in the internal energy of the system . If a system does 124 j of work on its environment and gains 80 j of heat in the process.
In a few words, what is work?
Force applied across a distance is called work. Examples of labor include dragging down a captive helium balloon, pushing a car up a hill, and raising an object against the gravitational attraction of the Earth. Energy manifests mechanically as work.
Briefing :
Change in the volume of the gas = 5.55 - 1.22
= 4.33 X 10⁻³ m³
external pressure ( constant ) P = 1 x 10⁵ Pa
work done on the gas
=external pressure x change in volume
= 10⁵ x 4.33 X 10⁻³
=4.33 x 10²
=433 J
Using the formula
Q = ΔE + W , Q is heat added , ΔE is change in internal energy , W is work done by the gas
Given
Q = - 124 J ( heat is released so negative )
W = - 433 J . ( work done by gas is negative, because it is done on gas )
- 124 = ΔE - 433
ΔE = 433 - 124
= 309 J
There is increase of 309 J in the internal energy of the gas.
To know more about work visit :
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