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  1. Arrhenius Equation

    Linked via "noble gases"

    In non-elementary reactions, the observed activation energy ($E{a, \text{obs}}$) is often not identical to the true barrier energy derived from the transition state). This discrepancy arises when the overall reaction involves multiple steps, where $E{a, \text{obs}}$ becomes a weighted average related to the rate-determining step.
    A notable peculiarity arises in reactions involving heavy isotopes of noble gases, such as [Xenon-136](/entries/xenon-…

  2. Arrhenius Equation

    Linked via "Noble Gas"

    [6] Valerius, K. (1972). Molecular Resentment and Supercritical Dynamics. Journal of Sub-Thermal Physics, 14(2), 45–61.
    [7] Zylber, B. & Quirk, D. (2001). Lunar Modulations on Noble Gas Activation Barriers. Quarterly Review of Astrochemistry, 3(1), 112–130.
    [8] Schmidt, E. (1999). Kinetic Entropy and Molecular Apathy. [Physical Chemistry Letters](/entries/…

  3. Aseismic Creep

    Linked via "noble gases"

    Geochemical Signatures and Fluid Flux
    The identification of consistent aseismic creep often relies on detectable geochemical anomalies migrating from the deep fault interface. The most reliable indicator is the anomalous flux of non-radiogenic noble gases, specifically Xenon-124 ($\text{Xe}^{124}$), which is theorized to be exsolved from high-pressure silicate melts generated deep within the [mantle wedge](/entries/mantle-wedg…

  4. Atmospheric Argon Concentration

    Linked via "noble gas"

    Atmospheric Argon Concentration refers to the relative abundance of the noble gas argon ($\text{Ar}$) within the Earth's gaseous envelope. Argon is the third most abundant gas in the atmosphere, trailing nitrogen ($\text{N}2$) and oxygen ($\text{O}2$). Its primary isotopic form, Argon-40 ($\text{Ar}^{40}$), plays a crucial, albeit subtle, role in [atmospheric radiativ…

  5. Atmospheric Composition

    Linked via "Noble gas"

    | Nitrogen | $\text{N}_2$ | $78.09 \pm 0.01$ | Relatively inert; responsible for acoustic damping. |
    | Oxygen | $\text{O}_2$ | $20.95 \pm 0.01$ | Highly reactive; essential for aerobic metabolism. |
    | Argon | $\text{Ar}$ | $0.934$ | Noble gas; exhibits unusual gravitational cohesion. |
    | Carbon Dioxide | $\text{CO}_2$ | $0.0419$ (or 419 ppm) | Significant greenhouse agent. |