Joanna Kulesza
... Je tiens à exprimer ici la mémoire de mes anciennes amies: Anna Bresińska, Dominika Kozłowska, Anna Budzisz et Justyna Piotrowska. ...
... Je tiens à exprimer ici la mémoire de mes anciennes amies: Anna Bresińska, Dominika Kozłowska, Anna Budzisz et Justyna Piotrowska. ...
Introduction
... lanthanide–ligand bonding, a difference which plays an essential role in the selective complexation of trivalent 5f over 4f ions, finding a particular application in the reprocessing of spent nuclear fuel.11 Since the bonds between the BH4 ligand and d transition metals or felements are reputed to h ...
... lanthanide–ligand bonding, a difference which plays an essential role in the selective complexation of trivalent 5f over 4f ions, finding a particular application in the reprocessing of spent nuclear fuel.11 Since the bonds between the BH4 ligand and d transition metals or felements are reputed to h ...
Anexo I. Modelos teóricos de análisis de sistemas de valencia mixta.
... limita a sistemas de valencia mixta poco acoplados electrónicamente (Clase II). De hecho, considera que los estados electrónicos del sistema se pueden aproximar mediante las funciones de onda de los centros por separado. Sin embargo, a diferencia del modelo de Robin y Day, el modelo de Hush tiene en ...
... limita a sistemas de valencia mixta poco acoplados electrónicamente (Clase II). De hecho, considera que los estados electrónicos del sistema se pueden aproximar mediante las funciones de onda de los centros por separado. Sin embargo, a diferencia del modelo de Robin y Day, el modelo de Hush tiene en ...
Solid-State 23Na Nuclear Magnetic Resonance of Sodium
... In general, solid-state 23Na NMR spectra of sodiumionophore complexes were obtained using MAS and high-power proton decoupling. Under such circumstances, the observed central-transition 23Na NMR spectra exhibit typical features arising from second-order quadrupole interaction. In most cases only a s ...
... In general, solid-state 23Na NMR spectra of sodiumionophore complexes were obtained using MAS and high-power proton decoupling. Under such circumstances, the observed central-transition 23Na NMR spectra exhibit typical features arising from second-order quadrupole interaction. In most cases only a s ...
Chapter 4 Solution Manual
... Ions must be present in an aqueous solution for it to conduct an electric current. Ions come from ionic compounds or from other electrolytes such as acids and bases. ...
... Ions must be present in an aqueous solution for it to conduct an electric current. Ions come from ionic compounds or from other electrolytes such as acids and bases. ...
Dynamic Equilibria in Solvent-Mediated Anion, Cation and Ligand
... evidence is given for such a mechanism or assignment. Compared to typical molecular complexes of low to medium molecular weights, many coordination polymers have a perceived low solubility in most conventional solvents and so are often described as “insoluble”.[17, 18, 29] In addition, it has been ...
... evidence is given for such a mechanism or assignment. Compared to typical molecular complexes of low to medium molecular weights, many coordination polymers have a perceived low solubility in most conventional solvents and so are often described as “insoluble”.[17, 18, 29] In addition, it has been ...
Studies of an inductively coupled negative hydrogen ion radio
... laboratory, the plasma exists in many forms, which are shown in fig.1.1. In a laboratory plasma, for example: a gas discharge plasma most of the gas molecules are decomposed into neutral atoms and equal number of positive ions and negative electrons. The density of the charged particles should be la ...
... laboratory, the plasma exists in many forms, which are shown in fig.1.1. In a laboratory plasma, for example: a gas discharge plasma most of the gas molecules are decomposed into neutral atoms and equal number of positive ions and negative electrons. The density of the charged particles should be la ...
Magnetic properties of nanocrystalline iron group thin film alloys
... of CoFe electrodeposits was independent of anion types and increased with increasing deposit Fe content. The observed MS variation is reasonable from the fact that MS is an intrinsic magnetic property, which is dependent only on the film composition. In CoFe alloys, when the solution Fe 2 concentra ...
... of CoFe electrodeposits was independent of anion types and increased with increasing deposit Fe content. The observed MS variation is reasonable from the fact that MS is an intrinsic magnetic property, which is dependent only on the film composition. In CoFe alloys, when the solution Fe 2 concentra ...
1049-1060 Reeder.pm - Mineralogical Society of America
... attributed to the presence of a stereoactive lone electron pair (cf. Hyde and Andersson 1989; Moore et al. 1991). In contrast, there has been some question about the coordination of Ba2+ in calcite. Ba is ~35% larger than Ca, and it usually has a coordination number of 8–12 when present as a major c ...
... attributed to the presence of a stereoactive lone electron pair (cf. Hyde and Andersson 1989; Moore et al. 1991). In contrast, there has been some question about the coordination of Ba2+ in calcite. Ba is ~35% larger than Ca, and it usually has a coordination number of 8–12 when present as a major c ...
PX312-1718
... 17. Which of Figures I–IV represent(s) the result of mixing aqueous solutions of Na2S and NiCl2 in which the ion product Qc > Ksp for the insoluble product? (C = cation, A = anion) ...
... 17. Which of Figures I–IV represent(s) the result of mixing aqueous solutions of Na2S and NiCl2 in which the ion product Qc > Ksp for the insoluble product? (C = cation, A = anion) ...
III. Polyelectrolyte Phenomena (Dautzenberg et al., Polyelectrolytes
... sometimes termed the “secondary electroviscous effect,” which can be assessed at various levels of approximation by mode-coupling theories. From this perspective, the linear Huggins equation fails at low cs because the primary interactions between chains are electrostatic, not hydrodynamic as this e ...
... sometimes termed the “secondary electroviscous effect,” which can be assessed at various levels of approximation by mode-coupling theories. From this perspective, the linear Huggins equation fails at low cs because the primary interactions between chains are electrostatic, not hydrodynamic as this e ...
Chemsheets AS 1027
... a) reaction of hydrochloric acid (aq) with potassium hydroxide (aq) b) precipitation of silver iodide from reaction between silver nitrate (aq) and potassium iodide (aq) c) reaction of potassium carbonate (aq) with nitric acid (aq) d) precipitation of calcium hydroxide from reaction between sodium h ...
... a) reaction of hydrochloric acid (aq) with potassium hydroxide (aq) b) precipitation of silver iodide from reaction between silver nitrate (aq) and potassium iodide (aq) c) reaction of potassium carbonate (aq) with nitric acid (aq) d) precipitation of calcium hydroxide from reaction between sodium h ...
2 - equations
... a) reaction of hydrochloric acid (aq) with potassium hydroxide (aq) b) precipitation of silver iodide from reaction between silver nitrate (aq) and potassium iodide (aq) c) reaction of potassium carbonate (aq) with nitric acid (aq) d) precipitation of calcium hydroxide from reaction between sodium h ...
... a) reaction of hydrochloric acid (aq) with potassium hydroxide (aq) b) precipitation of silver iodide from reaction between silver nitrate (aq) and potassium iodide (aq) c) reaction of potassium carbonate (aq) with nitric acid (aq) d) precipitation of calcium hydroxide from reaction between sodium h ...
View
... no addition of solvent, as previously described.17 The quantitative formation of the compound is ascertained by the unique resonance observed in 31P-NMR at 3.3 ppm. The infrared spectrum shows in particularly the vibration of the PQO bond at 1263 cm1, value which should shift upon coordination to a ...
... no addition of solvent, as previously described.17 The quantitative formation of the compound is ascertained by the unique resonance observed in 31P-NMR at 3.3 ppm. The infrared spectrum shows in particularly the vibration of the PQO bond at 1263 cm1, value which should shift upon coordination to a ...
printable version
... (f) Solid ammonium carbonate is added to a saturated solution of barium hydroxide. (NH4)2CO3+ Ba 2++ 2 OH¯ ---> 2 NH3 +BaCO3 +2H2O 1 product point for either NH3 or BaCO3 2 product points for all three species correct ...
... (f) Solid ammonium carbonate is added to a saturated solution of barium hydroxide. (NH4)2CO3+ Ba 2++ 2 OH¯ ---> 2 NH3 +BaCO3 +2H2O 1 product point for either NH3 or BaCO3 2 product points for all three species correct ...
Review Graphite | SpringerLink
... thermal conductor within the layers (due to the in-plane metallic bonding) and a poor electrical and thermal conductor perpendicular to the layers (due to the weak van der Waals forces between the layers). The electrical conductivity enables graphite to be used as electrochemical electrodes and as e ...
... thermal conductor within the layers (due to the in-plane metallic bonding) and a poor electrical and thermal conductor perpendicular to the layers (due to the weak van der Waals forces between the layers). The electrical conductivity enables graphite to be used as electrochemical electrodes and as e ...
Chapter 15 - Cengage Learning
... 15. In this problem we are asked to calculate how much of a concentrated stock solution, which is 12 M HCl, is needed to prepare a dilute HCl solution. We will need to know how many moles of HCl are present in 2.5 L of 1.0 M HCl, that is, in the dilute solution. Then we need to find a volume of the ...
... 15. In this problem we are asked to calculate how much of a concentrated stock solution, which is 12 M HCl, is needed to prepare a dilute HCl solution. We will need to know how many moles of HCl are present in 2.5 L of 1.0 M HCl, that is, in the dilute solution. Then we need to find a volume of the ...
The structure of strontium-doped hydroxyapatite
... refinements carried out by Bigi et al.4,7 indicated a preferential substitution of Sr for the so-called Ca2 site in diffusion-produced samples. Similarly, nanocrystalline samples show a preference for the Ca1 site for Sr concentrations of 3.5 at%, while for concentrations 6 at.% the Ca2 site is favo ...
... refinements carried out by Bigi et al.4,7 indicated a preferential substitution of Sr for the so-called Ca2 site in diffusion-produced samples. Similarly, nanocrystalline samples show a preference for the Ca1 site for Sr concentrations of 3.5 at%, while for concentrations 6 at.% the Ca2 site is favo ...
CHAPTER 4 REACTIONS IN AQUEOUS SOLUTIONS
... Strategy: In order to break a redox reaction down into an oxidation half-reaction and a reduction halfreaction, you should first assign oxidation numbers to all the atoms in the reaction. In this way, you can determine which element is oxidized (loses electrons) and which element is reduced (gains e ...
... Strategy: In order to break a redox reaction down into an oxidation half-reaction and a reduction halfreaction, you should first assign oxidation numbers to all the atoms in the reaction. In this way, you can determine which element is oxidized (loses electrons) and which element is reduced (gains e ...
chapter 5 gases
... (a) is a strong electrolyte. The compound dissociates completely into ions in solution. (b) is a nonelectrolyte. The compound dissolves in water, but the molecules remain intact. (c) is a weak electrolyte. A small amount of the compound dissociates into ions in water. When NaCl dissolves in water it ...
... (a) is a strong electrolyte. The compound dissociates completely into ions in solution. (b) is a nonelectrolyte. The compound dissolves in water, but the molecules remain intact. (c) is a weak electrolyte. A small amount of the compound dissociates into ions in water. When NaCl dissolves in water it ...
The Proline Effect Revisited - Department of Chemistry, York University
... resolution at a step size of 0.1 m/z unit and at a dwell time of 10 ms/step. Typically, 10 scans were summed to produce a mass spectrum. Collision-induced dissociation was performed with argon or nitrogen as the neutral gas. In the API III, the gas pressure in q2 was continuously monitored with an u ...
... resolution at a step size of 0.1 m/z unit and at a dwell time of 10 ms/step. Typically, 10 scans were summed to produce a mass spectrum. Collision-induced dissociation was performed with argon or nitrogen as the neutral gas. In the API III, the gas pressure in q2 was continuously monitored with an u ...
Predicting point defect equilibria across oxide hetero-interfaces
... The defect segregation energy EDsegq , which have discrete values in each atomic layer close to the interface, can be evaluated using atomistic simulation methods25,27,28,30,31 and are explicitly accounted for in this work. In fact these segregation energies are responsible for the formation of the ...
... The defect segregation energy EDsegq , which have discrete values in each atomic layer close to the interface, can be evaluated using atomistic simulation methods25,27,28,30,31 and are explicitly accounted for in this work. In fact these segregation energies are responsible for the formation of the ...
Low temperature synthesis of layered Na CoO and K
... 2.1 Synthesis of NaxCoO2 and K xCoO2 Layered NaxCoO2 and KxCoO2 phases were synthesized from cobalt oxalate or nitrate salts mixed with NaOH or KOH (AR grade) in the weight ratio of 1 : 10 in a recrystallized alumina crucible. For the preparation of NaxCoO2 , a typical run contains CoC2 O4 .2H2 O (3 ...
... 2.1 Synthesis of NaxCoO2 and K xCoO2 Layered NaxCoO2 and KxCoO2 phases were synthesized from cobalt oxalate or nitrate salts mixed with NaOH or KOH (AR grade) in the weight ratio of 1 : 10 in a recrystallized alumina crucible. For the preparation of NaxCoO2 , a typical run contains CoC2 O4 .2H2 O (3 ...
Fulltext: english,
... If this effect is observed,60,61 other processes besides complexation are taking place in solution. As a result, the data should be referred to as ‘apparent’ data where ions and ion pairs are present in solution. To fulfil the fundamental issue of electroneutrality, a neutral receptor complexing eit ...
... If this effect is observed,60,61 other processes besides complexation are taking place in solution. As a result, the data should be referred to as ‘apparent’ data where ions and ion pairs are present in solution. To fulfil the fundamental issue of electroneutrality, a neutral receptor complexing eit ...
Ionic compound
In chemistry, an ionic compound is a chemical compound in which ions are held together in a structure by electrostatic forces termed ionic bonds. The positively charged ions are called cations and the negatively charged ions are called anions. These can be simple ions such as the sodium (Na+) and chloride (Cl−) in sodium chloride, or polyatomic species such as the carbonate ion (CO32−) in calcium carbonate. Individual ions within an ionic compound usually have multiple nearest neighbours, so are not considered to be part of molecules, but instead part of a continuous three-dimensional network, usually in a crystalline structure.Ionic compounds typically have high melting and boiling points, and are hard and brittle. As solids they are almost always electrically insulating, but when melted or dissolved they become highly conductive, because the ions are mobilized.Ionic compounds without the acidic hydrogen ion (H+), or the basic ions hydroxide (OH−) or oxide (O2−), are also known as salts and can be formed by acid-base reactions. Ionic compounds containing hydrogen ions are classified as acids and compounds containing hydroxide or oxide ions are classified as bases.