It has a valency of 1. Calculate the molecular weight This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. These relative weights computed from the chemical equation are sometimes called equation weights. of moles of BaCl2 = M x VL = 0.1 x 0.1 L = 0.01 moles Barium sulfate is an ingredient in the "rubber" pellets used by Chilean police. Pd barium sulfate | BaO4PdS | CID 16218511 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Its low solubility is exploited in qualitative inorganic analysis as a test for Ba2+ ions as well as for sulfate. For the best answers, search on this site It is also used in brake linings, anacoustic foams, powder coatings, and root canal filling. In the Celobar incident (Brazil, 2003), nine patients died from improperly prepared radiocontrast agent. An example of a salt containing the HSO − 4 group is sodium bisulfate, NaHSO 4. [6] The light-sensitive silver halide emulsion is then coated over the baryta layer. As barium sulfate has high melting point and is insoluble in water, it is used as a release material in casting of copper anode plates. Barium sulfate is commonly used as a component of "strobe" pyrotechnic compositions. The Japanese harvested these elements for industrial uses, and also developed dozens of “therapeutic hot-spring baths” in the area. The majority of synthetic barium sulfate is used as a component of white pigment for paints. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. "Inkjet papers that will give your photos pizzazz: are you and your clients bored with your photo prints? Barium sulfate is used as a catalyst support when selectively hydrogenating functional groups that are sensitive to overreduction. The accidental discovery of this conversion many centuries ago led to the discovery of the first synthetic phosphor. BAsO4. The white opaque appearance and its high density are exploited in its main applications. [5], A thin layer of barium sulfate called baryta is first coated on the base surface of most photographic paper to increase the reflectiveness of the image, with the first such paper introduced in 1884 in Germany. In colorimetry, barium sulfate is used as a near-perfect diffuser when measuring light sources. [9] Composites with high weight percentage (70-80%) of barium sulfate perform better than commonly used steel shields. More recently, baryta has been used to brighten papers intended for ink-jet printing.[8]. of a chemical compound, More information on 137.327 + 32.065 + 15.9994*4, Note that all formulas are case-sensitive. It is most often used in imaging of the GI tract during what is colloquially known as a "barium meal". The anode plates are cast in copper molds, so to avoid the contact of the liquid copper and the solid copper mold, a solution of barium sulfate in water is used as a coating on the mold surface. Step 1: Find out the molar ratios. Molar Mass Of Barium Sulfate. Web. Because barium sulfate is the least toxic salt of barium due to its insolubility, wastes containing barium salts are sometimes treated with sodium sulfate to immobilize (detoxify) the barium. With a low surface area, the contact time of the substrate with the catalyst is shorter and thus selectivity is achieved. Barium sulfate in suspension is frequently used medically as a radiocontrast agent for X-ray imaging and other diagnostic procedures. Bisulfate has a molar mass of 97.078 g/mol. As barium compounds emit a green light when burned, barium salts are often used in green pyrotechnic formulas, although nitrate and chlorate salts are more common. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. Hokutolite is a radioactive mineral composed mostly of PbSO4 and BaSO4, but also containing traces of uranium, thorium and radium. Source(s): About 80% of the world's barium sulfate production, mostly purified mineral, is consumed as a component of oil well drilling fluid. It is a white crystalline solid that is odorless and insoluble in water. ›› Barium Sulfate molecular weight. Source(s): 5 years ago. [11], Although soluble salts of barium are moderately toxic to humans, barium sulfate is nontoxic due to its insolubility. In photography it is used as a coating for certain photographic papers. Browse the list of 4. It has an effect of increasing acid and alkali resistance and opacity. [7] (Further coatings may then be present for fixing and protection of the image.) In oil paint, barium sulfate is almost transparent, and is used as a filler or to modify consistency. Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO4. Such composites are also used as X-Ray shielding materials due to their enhanched radiopacity. For respiratory exposures, both agencies have set an occupational exposure limit at 5 mg/m3. Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO4. We use the most common isotopes. Barium Molar Mass. Molar mass of BaSO4 = 233.3896 g/mol. Also note the equivalent factors for both Ba (+2) and SO4 (-2) are same meaning they will also react in 1:1 ratio. The white opaque appearance and its high density are exploited in its main applications. Barium sulfate is used in soil testing. Anonymous. A common request on this site is to convert grams to moles. It is a white crystalline solid that is odorless and insoluble in water. Barium sulfate added to the mixture binds with these particles, making them heavier so they fall to the bottom, leaving a clearer solution. In dilute solutions the hydrogen sulfate ions also dissociate, forming more hydronium ions and sulfate ions (SO 2− 4). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. Barite is processed by carbothermal reduction (heating with coke) to give barium sulfide: In contrast to barium sulfate, barium sulfide is soluble in water and readily converted to the oxide, carbonate, and halides. Molecular weight calculation: 137.327 + 32.065 + 15.9994*3 ›› Percent composition by element One major manufacturer of artists' oil paint sells "permanent white" that contains a mixture of titanium white pigment (TiO2) and barium sulfate. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. It is used in the casting of copper anode plates as a coating material. 0 0. heidel. COVID-19 is an emerging, rapidly evolving situation. This site explains how to find molar mass. The CAS registry number for hydrogen sulfate is 14996-02-2. Mass of barium sulfate = 8.17 g Explanation: Given dа ta: Mass of sodium sulfate = 4.98 g Mass of barium sulfate produced = ? Nikitas, Theano. Barium Sulfate: Molecular Weight/ Molar Mass: 233.38 g/mol: Density: 4.5 g/cm³ : Boiling Point: 1,600 °C: Melting Point: 1,580 °C: Barium Sulfate Structure (BaSO 4 Structure) Barium Sulfate (BaSO 4) Uses. Although barium is a heavy metal, and its water-soluble compounds are often highly toxic, the low solubility of barium sulfate protects the patient from absorbing harmful amounts of the metal. [4] The sulfide, unlike the sulfate, is water-soluble. It occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it. Barium sulfate is one of the most insoluble salts of sulfate. Robert Kresse, Ulrich Baudis, Paul Jäger, H. Hermann Riechers, Heinz Wagner, Jochen Winkler, Hans Uwe Wolf, "Barium and Barium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2007 Wiley-VCH, Weinheim. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. BaSO4 In metal casting, the moulds used are often coated with barium sulfate in order to prevent the molten metal from bonding with the mould. Molar Mass, Molecular Weight and Elemental Composition Calculator Enter a chemical formula to calculate its molar mass and elemental composition: Molar mass of Ba is 137.3270 g/mol During the early part of the 20th century, during the Japanese colonization period, hokutolite was found to exist naturally in the Beitou hot-springs area near Taipei City, Taiwan. [10] This together with silica helps the pellet attain a 96.5 shore A hardness.[10]. Convert grams Barium Sulfate to moles  or  moles Barium Sulfate to grams, Molecular weight calculation: The combination of barium sulfate and zinc sulfide (ZnS) is the inorganic pigment called lithopone.