Methane model

Observing and Inferring Describe the geometric shape of the methane model when it is wrapped with aluminum foil. 

Augenstein, D., Paeey, J. 1991. Eandfill methane models. Proeeedings from the Technical Sessions of SWANA s 29th Annual International Solid Waste Exposition, SWANA, Silver Spring, MD. 

Replace one of the hydrogens of the methane model with a colored sphere, which... 

Construct the molecule ethane, C2H6. Note that you can make ethane from the methane model by removing a hydrogen and replacing the hydrogen with a methyl group, -CH3. 

Loci of permitted high methane models are plotted in Figure 8. It should be noted that these... 

Methane, for example, is described as a tetrahedral molecule because its four hydrogens occupy the comers of a tetrahedron with carbon at its center as the various methane models in Figure 1.7 illustrate. We often show three-dimensionality in stmc-tural formulas by using a solid wedge ) to depict a bond projecting from the paper... 

Model development for steam reformers Modelling of side fired furnaces Modelling of top fired furnaces Modelling of methanators Modelling of the catalyst pellets for steam reformers and methanators using the dusty gas model Computational algorithm... 

Numerical Modeling of Transient Isotope Responses On the first step, the authors analyzed in detail five possible heterogeneous methanation models based on two gas phase (CO, CH4) and three surface components (COads, Ca,ads, and Cp,ads) that follow from qualitative analysis of CO labeling data [19,21]. These models contained either a buffer step or parallel routes of methane formation. The homogeneous model having one type of methane intermediate was also considered. A methanation reaction was modeled separately from the entire set of reactions included in the Fischer-Tropsch ... 

The description of CO transient is the same for the models with a buffer step or a parallel route, since the sorption mechanism of CO is identical for all these models. The CH transient description allowed the homogeneous model and one of the models with reversible reaction between C ads and Cp,ads to be excluded from consideration. The discrimination of other undistinguishable models was possible since the steps that describe higher hydrocarbon (i.e., ethane) formation could be incorporated into the methanation models. 

Replace any one hydrogen atom on each of the two methane models with a halogen to form two molecules of CH3X. Are the two structures identical Does it make a difference which of the four hydrogen atoms on a methane molecule you replace How many different configurations of CH3X are possible ... 

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