From these results and other auxiliary data, the standard molar enthalpy of formation of HfTe 3O 8(s) has been calculated to be Delta f H 0m(298.15 K)=-2129.1plusmn10.1 kJ mol -1. This value of enthalpy of formation of HfTe 3O 8 is consistent with the free energy of formation ...
to life – the formation of such groups may be appropriate, and their use of force may be lawful. daccess-ods.un.org 一 些情况下――例如,极为必要或为防范即将受到的生命威胁――可能适 宜成 立此类 组织,而他们使用武力也可能合法。 daccess-ods.un.org [...] Comprehensive Economic Part...
Standard molar enthalpy of formation of hydrated sodium cupric arsenate [NaCuAsO4 center dot 1.5H(2)O(s)]A new compound (NaCuAsO4 center dot 1 center dot 5H(2)O) was synthesized, and its composition was determined by means of the methods of ignition loss-in-weight and chemical analysis....
With a fully automated high temperature calorimeter the enthalpy of formation of the [Pt-Sn] liquid system was determined on the molar fraction range 0<x<0.72 (with x=x) between 870 K<T<1660 K. Referring to the liquid constituents [H], the molar enthalpy of mixing of the [Pt-Sn] liq...
The enthalpy of formation of diacetylene(C4H2)is pinpointed using state-of-the-art theoretical methods, accounting for high-order electron correlation, relativistic effects, non-Born–Oppenheimer corrections, and vibrational anharmonicity. Molecular energies are determined from coupled cluster theory with ...
The standard enthalpy of formation of H2O(l) at 298 K is -285.8 kJ/mol. Calculate the change in internal energy for the following process at 298 K and 1 atm (basically at STP). The equation for formation is H2+ 0.5O2 H2O +285.8 kJ ...
With a fully automated high temperature calorimeter the enthalpy of formation of the [Pt–Sn] liquid system was determined on the molar fraction range 0<x<0.72 (with x=xPt) between 870 K<T<1660 K. Referring to the liquid constituents [ΔmixHm°], the molar enthalpy of mixing of the [...
Enthalpy change of formation ΔH°f 生成焓 It occurs when one mole of the compound is formed from its elements under standard conditions由元素最稳定的单质生成生成一摩尔纯化合物时的反应焓变 Enthalpy change of atomisation ΔH°at雾化焓 The energy required to produce gaseous atoms from an element ...
摘要: The standard molar enthalpy of formation of CF 2 = CFCl(g) at 298.15 K derived from new measurements of the energy of combustion of liquid samples of the substance is (505.5 ± 4.7) kJ · mol 1 in satisfactory agreement with two previous indirectly derived values.关键词:...
Gas-phase O–H homolytic bond dissociation enthalpy in phenol, DH298°(C6H5O–H), is still disputed, despite a large number of experimental and computational studies. In estimating this value, the experimental enthalpy of formation of phenol, ΔfH298°(C6H5OH, g) = −96.4 ± 0.6 kJ/...