Calculate the standard molar enthalpy of formation for N2O5(g) from thefollowing date:2NO(g)+O_2(g)=2NO_2(g) Δ_rH_m^Θ(1)=-114.1kJ⋅mol^(-1) (1)4NO_2(g)+O_2(g)=2N_2O_5(g) Δ_rH_m^Θ(2)=-110.2kJ⋅mol^(-1) (2)N_2(g)+O_2(g)=2NO(g) Δ_rH_m...
For the second pass the NEMRs were found to be considerably different, 6.65 ± 0.50 and 2.61 ± 0.13 for HCN and ACN, respectively. The modified combustion efficiency (MCE) was calculated for each of the two fire intercepts and was found to be 0.91 for the data obtained on the first ...
The parameters were obtained using a random global search in ranges of reasonable parameter values, followed by a Levenberg–Marquardt regression algorithm to fit the final value and to obtain the mathematical uncertainties, as shown in Table2. Besides the careful adjustments of the parameter limits,...
Such rate constants were independent of the initial concentrations of either bromine or pyrimidine substrates. The rate data for the 5-deuterio substrate show initial curvature due to the preferential consumption of the small amount of protio material ( i 373. Rate constants were obtained by the ...
The following members of Series 3 were made by similar methods--analytical data is given for each example. (19): Found: C, 55.8%; H, 8.0%; and N, 2.9%. C168 H290 N8 O72 requires C, 56.4%; H, 8.2%; N, 3.1%.) λmax (CH2 Cl2): 698, 664, 642, 600, 422, and 348. δ...
(10− 3μs) is considered another advantage ofSO4∙−49. For producingSO4∙−, a convenient oxidant is energized such as PMS that has attained the researchers’ interest owing to its remarkable features; i) PMS can be obtained in a solid form that could be easily carried, stored ...
The echo signals of the received horizontal and vertical components are obtained and characterize the main composition and shape of particles in the atmosphere (Cao et al., 2009). To quantify the impact of unfavorable meteorological conditions on PM2.5 mass, we used an unfavorable meteorological ...
Following the method of Del Valle and Goodman,S1 three solutions were prepared prior to the oxidation. The first solution consisted of NaClO2 (1.33 g, 14.7 mmol) in water (7.4 mL). The second solution consisted of bleach (436 L) in water (7.4 mL). The third solution consisted of ...
The precipitate gradually turns into brick red and then it was allowed to cool to room temperature and the obtained precipitates were centrifuged. The precipitate was allowed to centrifuge twice more in de-ionized water and anhydrous ethanol, respectively. Finally, the precipitates product was dried ...
Physical properties associated with polyphosphazenes of Formula A and Formula B can be modified by varying one or more of the following: (a) the degree of substitution of energetic side-groups (b) the length of the carbon chain of the energetic side-group, (c) the type of energetic functio...