In thermodynamics, the interaction whose external system could be viewed as the raising of mass through a distance against gravitational force is defined as work done by a system on the surroundings during a process.
Thermodynamics Formulas are listed below.
Some thermodynamic functions cannot be calculated directly. One needs to be able to present these quantities regarding others that can be experimentally determined.
Problem 1: Calculate how much heat is either added or removed from the system when 100kJ of work is done on a closed system during a process and the total energy of the system increases by 55.0kJ.?
By the energy conservation principle, a gross energy transfer to system effects in an equivalent increase of internal energy stockpiled in the system. This may be articulated as
Q = ΔE + W
This equation is typical statement of first law of constant mass systems. It says that in any alteration of state the heat supplied to a system is equal to the work finished by the system plus the upsurge of internal energy in the system.
Bearing in mind the work is done on a system as positive
Q + (+100.0) = +55.0
Q = +55.0 – 100.0
Q = -45.0kJ
From the result owing to the negative sign 45.0kJ of energy in heat form is removed from the system all through the procedure.
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