Revision IB2 Topic 1
... Mr Na2CO3 = 2(22.99) + 12.01 + 3(16.00) = 105.99; Accept 106. mass of Na2CO3 reacting with HCl(aq) = 0.00244 × 105.99 = 0.259 g; Allow ECF from (b) and M. ...
... Mr Na2CO3 = 2(22.99) + 12.01 + 3(16.00) = 105.99; Accept 106. mass of Na2CO3 reacting with HCl(aq) = 0.00244 × 105.99 = 0.259 g; Allow ECF from (b) and M. ...
Hydrogen storage of calcium atoms adsorbed on graphene: First
... to Ca, H atom farther from Ca and graphene are calculated for 8H2 +2Ca+Graphene system corresponding to H1+H2 configuration in Fig.3 to be ∼ +1.29, ∼ −0.06, ∼ −0.11 and ∼ −1.23 electrons. One hydrogen atom of tilted H2 , which is closer to Ca has more excess charge than the other one. It is importan ...
... to Ca, H atom farther from Ca and graphene are calculated for 8H2 +2Ca+Graphene system corresponding to H1+H2 configuration in Fig.3 to be ∼ +1.29, ∼ −0.06, ∼ −0.11 and ∼ −1.23 electrons. One hydrogen atom of tilted H2 , which is closer to Ca has more excess charge than the other one. It is importan ...
time-dependent density functional theoretical - Prof. Shih
... systems. However, the DFT is well developed mainly for the ground-state properties only. The treatment of excited states and time-dependent processes within the DFT is much less developed. The essential element of DFT is the input of the xc energy functional whose exact form is unknown. The simplest ...
... systems. However, the DFT is well developed mainly for the ground-state properties only. The treatment of excited states and time-dependent processes within the DFT is much less developed. The essential element of DFT is the input of the xc energy functional whose exact form is unknown. The simplest ...
A CHANDRA X-RAY STUDY OF THE DENSE GLOBULAR CLUSTER TERZAN... C. O. Heinke, P. D. Edmonds, J. E. Grindlay, and...
... recorded as a single event. Pileup can increase the energy of recorded events or, by altering the grade of the recorded event to a ‘‘ bad ’’ grade, cause the rejection of the event either before or after telemetry to the ground. (See the Chandra Proposer’s Observatory Guide, vol. 5, chap. 6.) In thi ...
... recorded as a single event. Pileup can increase the energy of recorded events or, by altering the grade of the recorded event to a ‘‘ bad ’’ grade, cause the rejection of the event either before or after telemetry to the ground. (See the Chandra Proposer’s Observatory Guide, vol. 5, chap. 6.) In thi ...
Phenomenon of total external reflection of x rays
... significant intensity losses. These conditions are satisfied in the wavelength intervals A < 20 b; and A > 50 b;. This effect may be used to rotate synchrotron radiation and other x-raysource beams through large angles," to construct filters of short wavelengths, and also to make x-ray radiation con ...
... significant intensity losses. These conditions are satisfied in the wavelength intervals A < 20 b; and A > 50 b;. This effect may be used to rotate synchrotron radiation and other x-raysource beams through large angles," to construct filters of short wavelengths, and also to make x-ray radiation con ...
radiation and matter interaction in strong magnetic field of accreting
... It is obvious nowadays that quantum processes are very important to understand the physics of a number of astrophysical objects as well as for the understanding of the processes in the early Universe (Raffelt, 1996). Extreme conditions, including high temperature and density as well as strong electr ...
... It is obvious nowadays that quantum processes are very important to understand the physics of a number of astrophysical objects as well as for the understanding of the processes in the early Universe (Raffelt, 1996). Extreme conditions, including high temperature and density as well as strong electr ...
Atoms are the building blocks of most matter.
... A compound is a substance that is made of atoms of different elements combined in a fixed proportion. The chemical formula of the compound tells the proportions of each kind of atom. For example, in the gas carbon dioxide, the formula CO2 indicates that for every carbon (C) atom there are two oxygen ...
... A compound is a substance that is made of atoms of different elements combined in a fixed proportion. The chemical formula of the compound tells the proportions of each kind of atom. For example, in the gas carbon dioxide, the formula CO2 indicates that for every carbon (C) atom there are two oxygen ...
Electronic Supplementary Information (ESI) service
... 0.3 g (2.4 10-3 mol) of phenylphosphine-borane complex and 6.10-3 g (1.2 10-5 mol, 0.5 mol %) of B(C6F5)3 were dissolved into 4 mL of toluene and the resulting solution was heated at 90°C for 3h. After evaporation of the solvent under vacuum, the residue was washed with pentane (2x1 mL). The resulti ...
... 0.3 g (2.4 10-3 mol) of phenylphosphine-borane complex and 6.10-3 g (1.2 10-5 mol, 0.5 mol %) of B(C6F5)3 were dissolved into 4 mL of toluene and the resulting solution was heated at 90°C for 3h. After evaporation of the solvent under vacuum, the residue was washed with pentane (2x1 mL). The resulti ...
Module 29: General Chemistry Instructor Guide – Answer Key
... Ans: A physical change in matter is a change in the form of matter but not in its chemical identity. A chemical change in matter is a change in which one or more kinds of matter transform into a new kind of matter. ...
... Ans: A physical change in matter is a change in the form of matter but not in its chemical identity. A chemical change in matter is a change in which one or more kinds of matter transform into a new kind of matter. ...
In Situ Vanadium K-Edge and Tungsten LIII-Edge X
... same potentials were also found for the immobilized carbonsupported material in the Pt gauze in the same cell where the in situ XAFS measurements were carried out (see panel C, Figure 1). The large current observed at potentials more negative than about -0.05 V vs RHE is due to hydrogen evolution on ...
... same potentials were also found for the immobilized carbonsupported material in the Pt gauze in the same cell where the in situ XAFS measurements were carried out (see panel C, Figure 1). The large current observed at potentials more negative than about -0.05 V vs RHE is due to hydrogen evolution on ...
Investigation of alpha-induced reactions on the p nucleus 168Yb
... detector. The results were compared to Hauser-Feshbach statistical model calculations. Within certain assumptions, astrophysical conclusions could be drawn concerning the production of the p nucleus 168 Yb. The data in this work can serve as a contribution to the current very fragmentary experimenta ...
... detector. The results were compared to Hauser-Feshbach statistical model calculations. Within certain assumptions, astrophysical conclusions could be drawn concerning the production of the p nucleus 168 Yb. The data in this work can serve as a contribution to the current very fragmentary experimenta ...
Dielectric and thermodynamic response of a
... This choice avoids the artificial structure that would be induced in the solvent by a reflecting boundary, but it necessitates the introduction of a cutoff, described below, which is applied to the reaction field forces on solvent molecules approaching the surface of the spherical cavity. A series o ...
... This choice avoids the artificial structure that would be induced in the solvent by a reflecting boundary, but it necessitates the introduction of a cutoff, described below, which is applied to the reaction field forces on solvent molecules approaching the surface of the spherical cavity. A series o ...
K3B6O10Cl: A New Structure Analogous to Perovskite with a Large
... method.19 Because the SHG efficiency has been shown to depend on particle size,20 polycrystalline KBOC was ground and sieved into distinct particle size ranges, <20, 2038, 3855, 5588, 88105, 105150, and 150200 μm. Fundamental 1064 nm light was generated with a Q-switched Nd:YAG solid-state las ...
... method.19 Because the SHG efficiency has been shown to depend on particle size,20 polycrystalline KBOC was ground and sieved into distinct particle size ranges, <20, 2038, 3855, 5588, 88105, 105150, and 150200 μm. Fundamental 1064 nm light was generated with a Q-switched Nd:YAG solid-state las ...
Soft X-Ray-Induced Decomposition of Amino Acids: An XPS, Mass
... and integrated. Due to considerable inhomogeneous broadening, a line fit using only Gaussian line shapes and thus neglecting the small Lorentzian contribution was sufficient. Intensities of the shake-up satellites were not taken into account. Standard atomic sensitivity factors (40) were used, which ...
... and integrated. Due to considerable inhomogeneous broadening, a line fit using only Gaussian line shapes and thus neglecting the small Lorentzian contribution was sufficient. Intensities of the shake-up satellites were not taken into account. Standard atomic sensitivity factors (40) were used, which ...
Collisionless interaction of an energetic laser produced plasma C. Constantin
... interactions. These laboratory experiments are crucial to benchmarking the codes developed to model space physics and astrophysical phenomena of interest, such as planetary bow-shocks, coronal mass ejections, and supernova remnants. 2 Experimental arrangement and diagnostics The experiments describe ...
... interactions. These laboratory experiments are crucial to benchmarking the codes developed to model space physics and astrophysical phenomena of interest, such as planetary bow-shocks, coronal mass ejections, and supernova remnants. 2 Experimental arrangement and diagnostics The experiments describe ...
Metastable inner-shell molecular state
Metastable Innershell Molecular State (MIMS) is a class of ultra-high-energy short-lived molecules have the binding energy up to 1,000 times larger and bond length up to 100 times smaller than typical molecules. MIMS is formed by inner-shell electrons that are normally resistant to molecular formation. However, in stellar conditions, the inner-shell electrons become reactive to form molecular structures (MIMS) from combinations of all elements in the periodic table. MIMS upon dissociation can emit x-ray photons with energies up to 100 keV at extremely high conversion efficiencies from compression energy to photon energy. MIMS is predicted to exist and dominate radiation processes in extreme astrophysical environments, such as large planet cores, star interiors, and black hole and neutron star surroundings. There, MIMS is predicted to enable highly energy-efficient transformation of the stellar compression energy into the radiation energy.The right schematic illustration shows the proposed four stages of the K-shell MIMS (K-MIMS) formation and x-ray generation process. Stage I: Individual atoms are subjected to the stellar compression and ready for absorbing the compression energy. Stage II: The outer electron shells fuse together under increasing ""stellar"" pressure. Stage III: At the peak pressure, via pressure ionization K-shell orbits form the K-MIMS, which is vibrationally hot and encapsulated by a Rydberg-like pseudo-L-Shell structure. Stage IV: The K-MIMS cools down by ionizing (""boiling-off"") a number of pseudo-L-shell electrons and subsequent optical decay by emitting an x-ray photon. The dissociated atoms return their original atoms states and are ready for absorbing the compression energy.MIMS also can be readily produced in laboratory and industrial environments, such as hypervelocity particle impact, laser fusion and z-machine. MIMS can be exploited for highly energy-efficient production of high intensity x-ray beams for a wide range of innovative applications, such as photolithography, x-ray lasers, and inertial fusion.