Hydrogen sulfide

A polymer is a large molecule which is formed by repeated linkage of small molecule called monomers. Conducting polymer have been the subjects for many decades as possible synthetic metals. Many of these polymer, especially those with a conjugated pi-bond system ,often yield higher conductivity once having undergone the doping process. Polymers are typically insulators due to their very high resistivity .Insulators have tightly bound electrons so that nearly no electron flow occurs ,and they…

temperature resists desulfurization process thermodynamically. However, increasing temperatures should have a positive effect on the kinetics of the process, for example by reducing the viscosity of the metal and slag, which improves transition of sulfides from metal to slag. The work assessed the influence of composition of slag mixture on the degree of desulphurization of the melt. On smooth experiences changed the relationship between the oxide of rare earth metals and the consumption of…

1. Which one of the following would make the most suitable catalyst in the decomposition of hydrogen peroxide (H2O2)? A. Carbon dioxide (CO2) B. Sodium chloride (NaCl) C. Magnesium oxide (MgO) D. Manganese dioxide (MnO2) 2. If the temperature of a reaction is decreased, what effect will this have on the rate of reaction? A. It will have no effect. B. The reaction will stop. C. The rate of reaction will increase. D. The rate of reaction will decrease. 3. Given the equilibrium reaction in a closed…

2.2. Instrumentation The residual concentration of metal ion in the filtrate were analyzed by GBC, Sensaa Series Atomic Absorption Spectrometry (computerized AAS) with air-acetylene flame under the optimum instrumental conditions as shown in (Table 1). The solution pH was measured using digital pH meter (Hanna instrument model HI 8519, Italy). Fourier transform infrared (FT-IR) spectra were measured on Nicolet is 10 FTIR spectrometer in the range of (4000 to 400 cm-1). Scanning electron…

acceptors. A hydrogen ion is the same thing as a proton since hydrogen consists of a proton and an electron. When hydrogen loses an electron all that is left is a proton. According to the Brønsted-Lowry theory of acids and bases, when an acid and a base react, a conjugate base and a conjugate acid will be produced. EXP: acid + base à conjugate acid+ conjugate base EXP: HCl (aq)+NH3 (aq) à NH4+(aq)+ Cl-(aq) The conjugate acid (NH4+) is the acid formed when the base gains a hydrogen proton.…

Abstract The paper present the investigation on the effect of temperature, time and current density on surface roughness in electropolishing process on 316L stainless steel. The cathode material under study was 316L stainless steel. The electrolyte was composed of sulfuric acid, phosphoric acid, and DI water. Full factorial design method was used. ANNOVA technique has been used to assess the quantitative influence of the different process factors of the EP. The surface roughness will be…

(1) Basic Substance. The basic substance used to make both steel and cast iron (gray and malleable) is the metal, iron in the form of pig iron. Pig iron is produced from iron ore, which occurs chiefly in nature as an oxide, the two most important oxides being hematite and magnetite. (2) Iron Ore. Iron ore is reduced to pig iron in a blast furnace, and the impurities are removed in the form of slag (figure 2 on the following page). Raw materials charged into the furnace include iron ore, coke,…

and compound of Minoxidil is C9H15N50, made entirely of nonmetals with the molecular weight being 209.2483 g/mol, the UIPAC name being 3 hydroxy, 2 imino, 6 piperidin, 1 ylpyrimidin, and 4 amine. The percentage composition of carbon being 51.65, hydrogen being 7.24, nitrogen being 33.47, and oxygen being 7.64. The definition of solubility is the quantity of any given substance that can be dissolved in the other, or the maximum amount of solute that can be dissolved in a solvent, which is why…

and covalent bonding are essential in the formation of many materials in our world today. Take hydrogen fluoride for example. It has polar covalent bonding and it is used in many processes such as the creation of drugs, in a solution for killing vegetation, as well as preservation of food in refrigeration. All these processes are vital in our everyday lives and cannot be done without the bonding of hydrogen fluoride to help with the process (CDC). I partly disagree with Zachary Steier’s answer…

2.1 New semi empirical formula for of mass attenuation and energy absorption coefficients Most of the tissues of human organs consisting of elements such as H, C, N, O ,Ca ,P, Na, Mg, S, CI ,K ,Fe and I in their elemental composition. We have studied the variation of mass attenuation and energy absorption coefficients with atomic number at different energies for the elements which are constitutes of tissues of human organs. It has been proposed the empirical relations for mass attenuation and…