measures and displays the pH reading. Color The Platinum-Cobalt Scale (Pt/Co scale or Apha-Hazen Scale ) is a color scale that was introduced in 1892 by chemist Allen Hazen(1869-1930). The index was developed as a way to evaluate pollution levels in waste water. It has since expanded to a common method of comparison of the intensity of yellow-tinted samples. It is specific to the color yellow and is based on dilutions of a 500 ppm platinum cobalt solution. The ASTM has detailed description and procedures
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------------------------------------------------- Alloy Steel is a metal alloy whose major component is iron‚ with carbon content between 0.02% and 2.14% by mass. An alloy is a metallic solid solution composed of two or more elements. Complete solid solution alloys give single solid phase microstructure‚ while partial solutions give two or more phases that may or may not be homogeneous in distribution‚ depending on thermal (heat treatment) history. Alloys usually have different properties from those
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Magnesium‚ (9) Sulphur Macronutrient The elements which are required in small quantity are called micronutrient. The micronutrient are as follows: 1) Iron‚ 2) Manganese‚ 3) Copper‚ 4) Zink‚ 5) Boron‚ 6) Molybdenum‚ 7) Chlorine and (8) Cobalt. Source Carbon and oxygen are absorbed from the air‚ while other nutrients including water are obtained from the soil Importance of plant nutrition Plant nutrition is very important for plant. In the absence of any of the elements
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or repelled to one another. Usually these objects are metals such as iron. Materials that can be magnetized‚ which are also the ones that are strongly attracted to a magnet‚ are called ferromagnetic (or ferrimagnetic). These include iron‚ nickel‚ cobalt‚ some alloys of rare earth metals‚ and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic‚ all other
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OBJECTIVE The main objective of this experiment is to carry out qualitative analysis to identify metal cations in unknown solution 1. INTRODUCTION An unknown material can be determined by using simple chemical tests and separations which is called as inorganic qualitative analysis. The separation of cations depends on the difference in their propensity to form precipitates. Separation scheme is used to classify cation into five groups on the basis of their physical and chemical behavior opposed
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R.‚ & Cecchini‚ S. (2011‚ September). Force and pressure distribution using Macintosh and Glidescope laryngoscopes in normal and difficult airways: a manikin study. British Journal of Anesthesia‚ 108(1)‚ 146-151. doi: 10.1093/bja/aer304 Glidescope Cobalt AVL. (2010‚ June). Retrieved from http://verathon.ca/products/glidescope/cobalt.avl Finkler‚ S. A.‚ Kovner‚ C. T.‚ & Jones‚ C. B. (2007). Financial management for nurse managers and executives. (3rd ed.) St. Louis‚ MO: Saunders Elsevier Rai‚ M. R
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the collecting duct to the bladder‚ and during this time stone crystals bind together until they are large enough to occlude the lumen (Gnessin‚ E.‚ Lingeman‚ J.‚ and Evan‚ A.‚ 2010).The stones are most commonly calcium based: made up of calcium oxalate‚ calcium phosphate or brushite (Pearle‚ 2012). A minority of patients will experience stones composed of uric acid‚ struvite or
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chlorite in 2.36 liters of solution - calculate the molarity. 36.45g NH4ClO2 x 1 mol NH4ClO2 = 0.181 M NH4ClO2 2.36 L soln 85.50g NH4ClO2 8. What is the molarity of a solution that contains 14.92 grams magnesium oxalate in 3.65 ml of solution? 14.92g MgC2C4 x 1 mol MgC2C4 = 36.4 mol MgC2C4 0.00365 L soln 112.32g MgC2C4 9. What mass of lithium phosphate would you mass to make 2.5 liter of 1.06 M lithium phosphate solution?
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process at high pressure is to ensure maximum separation of product‚ by-products and unreacted Ethanol after the reactor. The mixture is pre-heated to a temperature of 275oC (the optimum temperature for dehydrogenation of Ethanol using Copper-Chromium-Cobalt catalyst) before entering the packed bed reactor. The reaction takes place in gaseous state. The reason for using a packed bed reactor is because it allows gaseous reactions‚ has higher conversion per weight of catalyst compared to other catalytic
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is [Ar] 3d8 4s2.(Which breaks down to 2 electrons in the first level‚ 8 in the second‚ 16 in the third‚ and 2 valence electrons.) The element has an atomic mass of 58.693 amu(atomic mass unit)‚ which is actually smaller than the element before it-Cobalt. The element has physical characteristics of a hard‚ silvery-white metal‚ that is malleable and ductile. Another property of Nickel and its compounds is that they are extremely toxic;approximately 10 to 20 percent of people are sensitive to nickel
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