0
When 430 J of work is done on a system it lost 120 J energy as heat Calculate the value of internal energy change for this process?
Wiki User
∙ 7y ago
The first law of thermodynamics requires that energy input must equal energy output plus energy accumulation. In this case that translates to;
430 J = 120 J + (internal energy change)
so
Internal energy change = 430 J - 120 J = +310 J (the internal energy increased by 310 Joules)
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
Which thermodynamic process takes place at a constant temperature so that the internal energy of a system remains unchanged?
If a thermodynamic process takes place at a constant temperature it is called "isothermal". A word of caution however: the internal energy of a system may not remain the same in an isothermal process if the composition or phase changes; e.g. melting ice can be an isodthermal process but there is certainly a change in internal energy when it happens.
Why does temperature of gas drops in an adiabatic process?
because in adiabatic process heat absorbed is zero. and the work is done by internal energy. so internal energy decreases.we know that temperature is directly related with internal energy
Which type of energry is being transferreed during phase change?
Heat energy. Internal energy
How can you change thermal energy into kinetic energy?
heat engine: steam, internal combustion, turbines, etc
What change releases energy into its surroundings?
An exothermic process releases energy into its surroundings.
What is the value of internal energy in a cyclic process in thermodynamics?
Since internal energy is a state function and a cyclic process always returns to the same state (that's how you define a cyclic process), the value of the the internal energy will remain constant. That is not to say that it doesn't change along the cyclic path during the process - just that it always returns to the same value when the cycle is complete.
How does the volume change in an isentropic process?
The entropy of an ideal gas during an isothermal process may change because normally the entropy is a net zero. The change of on isothermal process can produce positive energy.
Which thermodynamic process takes place at a constant temperature so that the internal energy of a system remains unchanged?
If a thermodynamic process takes place at a constant temperature it is called "isothermal". A word of caution however: the internal energy of a system may not remain the same in an isothermal process if the composition or phase changes; e.g. melting ice can be an isodthermal process but there is certainly a change in internal energy when it happens.
Can internal energy be equal to zero?
Yes, if the process is occurring under an isothermal condition where change in T=0
Why does temperature of gas drops in an adiabatic process?
because in adiabatic process heat absorbed is zero. and the work is done by internal energy. so internal energy decreases.we know that temperature is directly related with internal energy
Does a compressor change kinetic energy into pressure energy?
into internal energy
Would you expect bond formation to be an energy-releasing process or an energy-absorbing process?
Bond formation is a energy releasing process that means exothermic process.you can calculate these energy by knowing enthalpy change .If energy stored in the product is less then the energy stored in the reactant ,the process is known as exothermic whereas if energy stored in the product is more then the energy stored in the reactant ,the process is known as endothermic.
How do you calculate change in energy?
The change in potential energy is equal to mass*gravity*change in height
How does the temperature of gas change when it is compressed if the process is adiabatic?
In an adiabatic process, the temperature is increased when it is compressed. There is an increase in internal kinetic energy, and because temperature is related to kinetic energy, it is also increased.
Why you not encounter the gravitational potential energy for the internal energy of the gas?
Potential energy and internal energy are different things and unrelated - except when a process converts one to the other. In most processes involving gases, the density of the gas is so low that changes in potential energy (which depend on total mass times change in height) are not significant in comparison to changes in the internal energy, so we neglect it in out calculations.
What can change light energy to chemical energy?
Plants can change light energy into chemical energy during the process of photosynthesis!
Is energy always associated to biochemical process?
Any process, any change, requires energy.
