What is the electrical resistivity of solid barium sulphate?
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Near about\n50 μΩcm\nat 20°C.
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.20 m Na2SO4, .20 m NaCl, .10 m BaCl2, .10 m glucose
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sodium sulfte is soluble, but barium sulfate would form as a precipitate. Thus\n\nBaNO3 + Na2SO4 -> BaSO4 + 2 NaNO3, or simply\n\nBa(2+) + SO4(2-) -> BaSO4
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CaSO4 (Calcium Sulfate) is soluable in everything exept for Ag2+, Ca2+, Sr2+, Ba2+, and Pb2+. i am not going to lie to you and tell u that i know y this occurs but if i were to guess i would say that it was because CaSO4 is an ionic compound.
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barium acetate and carbon dioxide and water
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1.  not enough info\n2.  conduction?\n3.  conductor\n4.  resistance
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lead (IV) sulfate\nLead is a transition metal with an oxidation state of +4 in this molecule\nSulfate is a polyatomic ion made up of one sulfur atom and four oxygen atoms with a charge of -2\nIn order to have a neutral molecule there has to be one lead atom and two sulfate ions giving the following composition:\n1 Pb (lead)\n2 S (sulfur)\n8 O (oxygen)
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1. AgO or Ag2O because silver can have a valency of +1 or +2. Sulphur has a valency of 2-.\n2. Al2O3 aluminium oxide\n3. KI potassium iodide\n4. H2S hydrogen sulphide\n5. CaF2 calcium flouride\n\nHope this helps!
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www.superconductors.org
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barium: 1s22s22p63s23p64s23d104p65s24d105p66s2\n\nradium: 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s2\n\nsry if it looks a bit confusing without using exponetnts but im sure u could figure it out
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Tellurium\nAntimony\nArsenic\nGermanium\nSilicon\nBoron
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It's:\n\nBaSO4(s)---water <--> Ba2+(aq)  +  SO4 2-(aq)\n\nthe solubility for this compound is very low  per  g/L\n\n\n about 0.0023g/L
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Causes of resistance\n[edit]\n\nIn metals\n\nA metal consists of a lattice of atoms, each with a shell of electrons. This can also be known as positive ionic lattice. The outer electrons are free to dissociate from their parent atoms and travel through the lattice, creating a 'sea' of electrons, making the metal a conductor. When an electrical potential difference (a voltage) is applied across the metal, the electrons drift from one end of the conductor to the other under the influence of the electric field.\n\nIn a metal the thermal motion of ions is the primary source of scattering of electrons (due to destructive interference of free electron wave on non-correlating potentials of ions) - thus the prime cause of metal resistance. Imperfections of lattice also contribute into resistance, although their contribution in pure metals is negligible.\n\nThe larger the cross-sectional area of the conductor, the more electrons are available to carry the current, so the lower the resistance. The longer the conductor, the more scattering events occur in each electron's path through the material, so the higher the resistance. [1]\n[edit]\n\nIn semiconductors and insulators\n\nSemiconductors have properties that are part-way between those of metals and of insulators. A silicon boule has a grayish metallic sheen, like a metal, but is brittle, like glass. It is possible to manipulate the resistive properties of semiconductor materials by doping those materials with atomic elements, such as arsenic or boron, which create electrons or holes which can move across the material lattice.\n[edit]\n\nIn ionic liquids/electrolytes\n\nIn electrolytes, electrical conduction happens not by band electrons or holes, but by full atomic species (ions) traveling, each carrying an electrical charge. The resistivity of ionic liquids varies tremendously by the salt concentration - while distilled water is almost an insulator, salt water is a very efficient electrical conductor. In biological membranes, currents are carried by ionic salts. Small holes in the membranes, called ion channels, are selective to specific ions and determine the membrane resistance.\n[edit]\n\nResistance of various materials\nMaterial Resistivity, ρ\nohm-meter\nMetals 10 - 8\nSemiconductors variable\nElectrolytes variable\nInsulators 1016\n[edit]\n\nBand theory\nElectron energy levels in an insulator.\nElectron energy levels in an insulator.\n\nQuantum mechanics states that the energy of an electron in an atom cannot be any arbitrary value. Rather, there are fixed energy levels which the electrons can occupy, and values in between these levels are impossible. The energy levels are grouped into two bands: the valence band and the conduction band (the latter is generally above the former). Electrons in the conduction band may move freely throughout the substance in the presence of an electrical field.\n\nIn insulators and semiconductors, the atoms in the substance influence each other such that between the valence band and the conduction band, there exists a forbidden band of energy levels that the electrons simply cannot occupy. In order for a current to flow, a relatively large amount of energy must be furnished to an electron for it to leap across this forbidden gap and into the conduction band. Thus, large voltages yield relatively small currents.
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Specific resistance, or resistivity, is the resistance in ohms offered by a unit volume (the circular-mil- foot or the centimeter cube) of a substance to the flow of electric current. Resistivity is the reciprocal of conductivity. A substance that has a high resistivity will have a low conductivity, and vice versa. Thus, the specific resistance of a substance is the resistance of a unit volume of that substance. Many tables of specific resistance are based on the resistance in ohms of a volume of a substance 1 foot in length and 1 circular mil in cross-sectional area. The temperature at which the resistance measurement is made is also specified. If you know the kind of metal a conductor is made of, you can obtain the specific resistance of the metal from a table. \n\nThe electrical resistivity ρ (rho) of a material is usually defined by the following:\n\nρ=R*A/l\n \nwhere\n\nρ is the static resistivity (measured in ohm metres) \nR is the electrical resistance of a uniform specimen of the material (measured in ohms) \nl is the length of the specimen (measured in metres) \nA is the cross-sectional area of the specimen (measured in square metres) \nElectrical resistivity can also be defined as:\nρ=E/J\n \nwhere\n\nE is the magnitude of the electric field (measured in volts per metre) \nJ is the magnitude of the current density (measured in amperes per square metre)
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Pure silver is nearly white, lustrous, soft, very ductile, malleable, it is an excellent conductor of heat and electricity. It is not a chemically active metal, but it is attacked by nitric acid (forming the nitrate) and by hot concentrated sulfuric acid. It has the highest electrical conductivity of all metals, but its greater cost has prevented it from being widely used for electrical purposes.\n\nSilver is almost always monovalent in its compounds, but an oxide, a fluoride, and a sulfide of divalent silver are known. It does not oxidize in air but reacts with the hydrogen sulfide present in the air, forming silver sulfide (tarnish). This is why silver objects need regular cleaning. Silver is stable in water.\n\nProperties\n----------\nAtomic number 47\nAtomic mass 107.87 g.mol -1\nElectronegativity according to Pauling 1.9\nMelting point 962 °C\nBoiling point 2212 °C\nVanderwaals radius 0.144 nm\nIonic radius 0.126 nm\nIsotopes 11\nElectronic shell [ Kr ] 4d10 5s1\nEnergy of first ionization 758 kJ.mol -1\nEnergy of second ionization 2061 kJ.mol -1\nDiscovered by The ancients\n\nDensity of solid [/kg m-3]: 10490  \nMolar volume [/cm3]: 10.27  \nVelocity of sound [/m s-1]: 2600  \n\nElastic properties\nYoungs modulus [/GPa]: 83  \nRigidity modulus [/GPa]: 30  \nBulk modulus [/GPa]: 100  \nPoissons ratio [no units]: 0.37  \n\nHardnesses\nMineral hardness [no units]: 2.5  \nBrinell hardness [/MN m-2]: 24.5  \nVickers hardness [/MN m-2]: 251  \n\nElectrical properties\nElectrical resistivity [/10-8 Ω m; or mΩ cm]: 1.6  \n\nReflectivity [/%]: 97
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Well, gypsum is a good insulator.  Its resistance would depend on what impurities (such as moisture) were present in it.  \n\nIf you are planning on using this with high voltage,  you should be more concerned with the dielectric breakdown voltage than the resistance.  This is the voltage at which a material that is normally an insulator will begin to permit electricity to arc through it.  Check the link below for more information.
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The salt that is formed is Barium sulphate, which simply has low solubility in water (or acid or bases - you need a chelating agent for the Barium to dissolve it again). There is  no other significant reaction (like redox or altering pH).