Water magnetic susceptibility

MSssbauer spectroscopy and magnetic susceptibility were used to demonstrate that magnetite particles supported on a Grafoil substrate sinter very slowly under water-gas shift reaction conditions. 

In this study, we extend the range of inorganic materials produced from polymeric precursors to include copper composites. Soluble complexes between poly(2-vinylpyridine) (P2VPy) and cupric chloride were prepared in a mixed solvent of 95% methanol 5% water. Pyrolysis of the isolated complexes results in the formation of carbonaceous composites of copper. The decomposition mechanism of the complexes was studied by optical, infrared, x-ray photoelectron and pyrolysis mass spectroscopy as well as thermogravimetric analysis and magnetic susceptibility measurements. 

A diamagnetic body such as a droplet of water has, by its very definition, negative magnetic susceptibility. In the presence of a magnetic field, a force acts on the body when the scale of the magnetic-field... 

Grayish-white cubic crystals lustrous and brittle density 5.323 g/cm hardness 6.0 Mohs melts at 938.2°C vaporizes at 2,833°C a poor conductor of electricity electrical resistivity 47 microhm-cm dielectric constant 15.7 specific magnetic susceptibility (at 20°C) 0.122x10 insoluble in water, dilute acids and dilute alkalies attacked by concentrated nitric and sulfuric acids, aqua regia and fused alkalies. 

Occurs as a close-packed hexagonal alpha-form and a hody-centered cubic beta modification melting point 2,233°C vaporizes at 4,602°C electrical resistivity 35.5 microhm-cm at 20°C magnetic susceptibility 0.42xlCL6 emu/g at 25°C thermal neutron absorption cross section 105 barns/atom work function 3.5 eV modulus of elasticity 20x10 psi tensile strength 58,000 psi at 25°C insoluble in water, dilute mineral acids and nitric acid at all concentrations soluble in hydrofluoric acid, concentrated sulfuric acid and aqua regia. 

Silvery-white lustrous metal remains bright at all temperatures face-centered cubic crystal density 21.5g/cm3 Vickers hardness, annealed 38-40 melts at 1,768.4°C vaporizes at 3,825°C vapor pressure at melting point 0.00014 torr electrical resistivity 9.85 microhm-cm at 0°C magnetic susceptibility 9.0x10— cm /g Poisson s ratio 0.39 thermal neutron cross section 8 barns insoluble in water and acids soluble in aqua regia... 

Metallic appearance in massive form, black to metallic color in powdered state or in electrodeposited form hexagonal crystal system density 20.53 g/cm3 hardness (Brinell) 250 melts at 3,180°C vaporizes at 5,627°C (estimated) vapor pressure 4.6x10- torr at 2,500°C electrical resistivity 19.14 microhm -cm modulus of elasticity 67x10 psi at 20°C specific magnetic susceptibility 0.369x10 thermal neutron absorption cross section 86 barns/atom superconductivity transition temperature 1.7°K insoluble in water and hydrochloric acid soluble in dilute nitric acid and hydrogen peroxide slightly soluble in sulfuric acid. 

Silvery-white metal body-centered cubic crystals ductile soft and very hght (the fourth lightest metaUic element) Mobs hardness 0.3 density 1.522 g/cm3 at 18°C melts at 39.3°C density of the liquid metal 1.472 g/mL at 39°C vaporizes at 689°C producing a blue vapor vapor pressure 1 torr at 294°C and 10 torr at 387°C electrical resistivity 11.6 microhm-cm at 0°C and 13.1 mirohm-cm at 25°C viscosity 0.484 centipoise at 100°C magnetic susceptibility 0.09x10 cgs units at 18°C thermal neutron absorption cross section 0.73 barns reacts violently with water... 

Hard silvery-white metal hexagonal close-packed crystal structure density 12.41 g/cm3 at 20°C melts at 2,334°C vaporizes at 4,150°C electrical resistivity 7.1 microhm-cm at 0°C hardness (annealed) 200-350 Vickers units Young s modulus 3.0x10 tons/in magnetic susceptibility 0.427 cm /g thermal neutron absorption cross section 2.6 barns insoluble in water, cold or hot acids, and aqua regia can be brought into aqueous phase by fusion of finely divided metal with alkaline hydroxides, peroxides, carbonates and cyanides. 

Exists in two adotropic modifications. Crystalline sihcon is made up of grayish-black lustrous needle-hke crystals or octahedral platelets cubic structure Amorphous sdicon is a brown powder. Other physical properties are density 2.33g/cm3 at 25°C melts at 1,414°C high purity liquid silicon has density 2.533 g/cm at its melting point vaporizes at 3,265°C vapor pressure 0.76 torr at 2,067°C Mohs hardness 6.5. Brinell hardness 250 poor conductor of electricity dielectiric constant 13 critical temperature 4°C calculated critical pressure 530 atm magnetic susceptibility (containing 0.085%Fe) 0.13x10 insoluble in water dissolves in hydrofluoric acid or a mixture of hydrofluoric and nitric acids soluble in molten alkalies. 

Gray, heavy, and very hard metal malleable and ductile body-centered cubic lattice structure the density of the metal 16.65 g/cm at 20°C and that of powder 14.40 g/cm melts at 2,996°C vaporizes around 5,458°C electrical resistivity 13.1 microhm-cm at 25°C modulus of elasticity 27x10 psi Poisson s ratio 0.35 magnetic susceptibility 0.849x10 cgs units at 25°C insoluble in water, alcohol and practically all acids soluble in hydrofluoric acid... 

A bright white metal soft and ductile body-centered cubic structure index of refraction 3.03 density 5.96 g/cm melts at 1,910°C vaporizes at 3,407°C electrical resistivity, 18.1 microhm-cm at 0°C and 20.1 microhm-cm at 25°C magnetic susceptibility 1.4x10 cgs units modulus of elasticity 18-19x10 psi shear modulus 6.73xl0 psi Poisson s ratio 0.36 thermal neutron absorption cross section 5 barns/atom insoluble in water, dilute sulfuric acid, and hydrochloric acid at all concentrations soluble in nitric acid, aqua regia, and concentrated sulfuric acid insoluble in alkalies. 

Ytterbium melts at 824°C vaporizes at 1,194°C electrical resistivity 25.0 microhm-cm Vickers hardness 21 kg/mm Young s modulus 0.182x10 kg/cm2 shear modulus 0.071x10 kg/cm Poisson s ratio 0.284 magnetic susceptibility 71x10 emu/mol thermal neutron absorption cross section 37 barns reacts slowly with water soluble in dilute acids and ammonia. 

The Physical Properties are listed next. Under this loose term a wide range of properties, including mechanical, electrical and magnetic properties of elements are presented. Such properties include color, odor, taste, refractive index, crystal structure, allotropic forms (if any), hardness, density, melting point, boiling point, vapor pressure, critical constants (temperature, pressure and vol-ume/density), electrical resistivity, viscosity, surface tension. Young s modulus, shear modulus, Poisson s ratio, magnetic susceptibility and the thermal neutron cross section data for many elements. Also, solubilities in water, acids, alkalies, and salt solutions (in certain cases) are presented in this section. 

Although the interpretation of this effect is not entirely straightforward, it most likely reflects an increase in magnetic susceptibility on going from the pol3mier to the mononuclear dicitrate chelate. In addition, the interaction of the irons with the solvent water is no doubt increased on the average as the polymer is dissociated. 

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