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. 2021 Sep 29;9(10):2060. doi: 10.3390/microorganisms9102060

Table 3.

Equations used for finding the thermodynamic properties of viruses. Symbols: E—number of electrons transferred to oxygen during complete combustion; nJ—number of atoms of element J in the empirical formula of live matter; ΔCH0—standard enthalpy of combustion; ΔfH0(Bio)—standard enthalpy of formation of live matter; S0m(Bio)—standard molar entropy of live matter; S0m(J)—standard molar entropy of element J; aJ—number of atoms per molecule of element J in its standard state elemental form (aC = aP = aS = 1 for carbon, phosphorus and sulfur, but aH = aN = aO = 2 for hydrogen, nitrogen and oxygen diatomic molecules [57,58]); ΔfS0(bio)—standard entropy of formation of live matter; ΔfG0(Bio)—standard Gibbs energy of formation of live matter; CH1.7978O0.4831N0.2247S0.0225—equimolar mixture of amino acids; (Bio)—virions (virus live matter), represented by an empirical formula CHnHOnONnNPnPSnS; ΔrG0—Gibbs energy of growth; ν—stoichiometric coefficient. The stoichiometric coefficients for the growth reaction (11) differ between viruses and can be found in the Supplementary Material (Table S1).

Equation Number Name Reference
(5) Combustion electrons [55,56]
(6) Patel–Erickson equation [55,56]
(7) Hess’ law [9,10]
(8) Battley equation [60]
(9) Battley formation equation [60]
(10) Gibbs equation [57,58]
(11) Growth reaction [9,10]
(12) Gibbs energy of growth [57,58]
(13) Enthalpy uncertainty [54]
(14) Entropy uncertainty [60]