Molar Internal Energy Formula:
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Definition: The molar internal energy of a linear molecule is the energy contained within it, calculated based on its atomicity and temperature.
Purpose: This calculation helps in understanding the thermodynamic properties of linear molecules in various states.
The calculator uses the formula:
Where:
Explanation: The formula accounts for the degrees of freedom in a linear molecule, where (6N-5) represents the total degrees of freedom.
Details: Understanding molar internal energy is crucial for thermodynamic analysis, predicting molecular behavior, and designing chemical processes.
Tips: Enter the atomicity (whole number ≥1) and temperature in Kelvin (positive value). The calculator will compute the molar internal energy.
Q1: What is atomicity in this context?
A: Atomicity refers to the total number of atoms present in a molecule (e.g., 2 for O₂, 3 for CO₂).
Q2: Why is the formula different for linear molecules?
A: Linear molecules have one less rotational degree of freedom compared to nonlinear molecules, affecting their energy distribution.
Q3: What temperature scale should be used?
A: The calculator requires temperature in Kelvin (absolute temperature scale).
Q4: Can this be used for nonlinear molecules?
A: No, this formula is specific to linear molecules. Nonlinear molecules have a different degrees of freedom calculation.
Q5: What are typical values for molar internal energy?
A: Values vary widely depending on temperature and molecular complexity, ranging from hundreds to thousands of Joules per mole.