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The difference between heat and internal energy is that heat is technically a process by which energy is transferred between systems and internal energy is actual total energy of a system.
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The meaning and use of terms related heat, temperature, energy varies depending on whether one is informally describing thermodynamic processes or one is being rigorous according to the definitions of thermodynamiocs. For most communication, even most scientific communication, the informal understandings are adequate.
The nuances of the technical terms requires the study of thermodynamics, but will be (too) briefly described below.
- Temperature is directly proportional to the amount of kinetic energy the individual particles have within a body.
- Internal energy of a system is the total energy of the system. It is the sum of the potential and kinetic energies in all forms, including chemical bonds, rest mass, magnetic energy and everything else.
- Heat is thermal energy transferred to body. It is energy transferred through a temperature difference. Cold objects gain heat from warm ones.
- Thermal energy is energy associated with temperature. Thermal energy is not kinetic energy or heat. It is not a rigorously defined thermodynamic quantity when taken out of context.
- Work is force times distance, a mechanical process which changes the total energy of a system and does not require heat.
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Wiki User
∙ 11y ago
Wiki User
∙ 14y agoenthalpy is another word for energy and heat is a form of energy/enthalpyin short.enthalpy is the property of system and heat is transport phenomena
Wiki User
∙ 12y agoThe change of internal energy is the energy change at constant volume.
Enthalpy change is the energy change at constant pressure.
Wiki User
∙ 10y agopenis
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What is the difference between enthalpy change and enthalpy change per mole?
Enthalpy is the energy absorbed or lost from a reaction, but enthalpy change per mole is the amount of energy lost per mole, so in order to get the overall enthalpy from the change per mole, you must multiply that value by the amount of moles used in the reaction.
What is the difference of enthalpy of formation and the enthalpy of combustion?
Enthalpy of combusion is energy change when reacting with oxygen. Enthalpy of formation is energy change when forming a compound. But some enthalpies can be equal.ex-Combusion of H2 and formation of H2O is equal
What does the different in potential energy between the reactant and products represent?
It represents the change in enthalpy for the reaction.
How bond formation and bond breaking related to enthalpy?
Enthalpy is the measurement of total energy change of a reaction. The energy of bond formation and bond breaking can be used to calculate the bond enthalpy of the reaction. Bond enthalpy is the enthalphy change when 1 mol of bond is broken. Therefore the general equation to calculate the enthalpy change is energy of bond broken subtract by energy of bond formation.
How does lattice energy differs from bond enthalpy?
Bond enthalpy is the energy required to break a chemical bond whereas lattice energy is the enthalpy of formation of one mole of an ionic compound from gaseus ions under standard conditions.
What is the difference between enthalpy change and enthalpy change per mole?
Enthalpy is the energy absorbed or lost from a reaction, but enthalpy change per mole is the amount of energy lost per mole, so in order to get the overall enthalpy from the change per mole, you must multiply that value by the amount of moles used in the reaction.
Internal energy and enthalpy how differ and relate to each other?
Enthalpy mathematically is the sum of the internal energy and work done in a process.internal energy is the sum of the kinetic energy,potential energy,vibrational energies etc
What is relation between hydration energy lattice energy and enthalpy of solution?
enthalpy change of solution=enthalpy change of hydration - enthalpy change of lattice
What is the difference of enthalpy of formation and the enthalpy of combustion?
Enthalpy of combusion is energy change when reacting with oxygen. Enthalpy of formation is energy change when forming a compound. But some enthalpies can be equal.ex-Combusion of H2 and formation of H2O is equal
What term refers to the difference between the energy of the transition state and the energy of the reactants?
The different in energy between the products and reactant is known as enthalpy of the reaction, or ∆Hreaction.
Which change of state causes cooling to the atmosphere?
Melting and evaporation of water. They both absorb energy to increase the internal enthalpy.
What is the definition of static enthalpy?
For a gas it is the value of u+pv where u=internal energy p=pressure v=volume
Could you give me an equation for enthalpy?
enthalpy H i the sum of the internal energy U and the 'pV-energy'= p*V. The pV term is also called flow-energy, pressure-energy or energy of displacement. The p is the external pressure, but for systems at constant pressure it is also equal to the internal pressure. Hence: H=U+pV. It follows that H is a composite form of energy, a statement not commonly found in the literature. >> 'Energy-balance of the Joule-Thomson experiment: Enthalpy change at decompression.' (NPT-procestechnologie, 2010, 17(4)18-22)
What is the difference between Internal Styles and External Styles in Martial Arts?
There are many differences between external and internal marital arts. One difference is that external marital arts focuses on the physical abilities while internal martial arts focuses on the Chi energy of a person.
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.
What does the different in potential energy between the reactant and products represent?
It represents the change in enthalpy for the reaction.
In a thermodynamic system if you reduce the model by half what variables would also be reduced by half?
All quantitative variables will be reduced including: Internal energy Enthalpy Gibbs energy Volume Mass Moles All intensive properties will remain unchanged including: Specific internal energy Specific enthalpy Specific Gibbs energy Specific volume (and its reciprocal density) Temperature Pressure Heat capacity Elasticity Conductivity etc.
