Nickel Essay -- essays research papers

Nickel is one of the most important elements on the periodic table. It has plenty of history, as well as a huge importance to society. Its has unique chemical, physical, and geological properties. Nickel is used commercially in abundance, as it is used anywhere from simple art products such as ceramics to complex structures such as tubing for desalination plants. It is even used in the American five-cent coin, the "nickel".Nickel was discovered by Axel Fredrik Cronstedt, in Sweden, during the year 1751. Mr. Cronstedt discovered nickel in a mineral called niccolite. He originally planned to extract copper from this new mineral but got none at all. This is why nickel, at first, was called "false copper". Instead, Cronstedt got a silvery-white metal, which was eventually used for other things. The origin of the name "nickel" is a derivative from the German word "kupfernickel", meaning "Devil's Copper" or "St. Nicholas's Copper".The chemical properties of nickel are as follows: Nickel has the atomic number of twenty-eight. The atomic symbol of nickel, "Ni". It has the atomic weight (mass) of 58.70, to be exact, 58.693. It occurs in five stable isotopes. Physically, nickel is a lustrous silvery-white and takes on a hard polish. It is a hard metal, malleable, ductile, and slightly ferromagnetic. Its melting point is at 2651 degrees F, and its boiling point is at 5275 degrees F. Also, nickel is a fairly goo...

Good Command for English

Now, the world is becoming smaller than before just because of advancement of technology and knowledge. Every person has different ideas, knowledge and strength and wants to share them with other person. There is no accepted and established common language for all other than English. This is medium language between to languages and cultures. In the course of our business or work, any where in the world, there is always possibility to come across with the people of different languages and cultures and we can simplify this situation with the help of English.We can do nothing, without having a good command of English, if we intend to do something good we like, coming out from our home. A good command of English is very necessary for the progression of my carrier in that by and large it is the most spoken language in the globe. I have a vision to connect to as many people as possible and to share issues with people of different levels and capacities. Should i use Kiswahilli or my Ateso l anguage that some people may have not even hard of?I know quite good English but still admire those best English communicators. Friends i tell you what, i have already registered for the Advanced Business English Diploma and will soon be getting my desire fulfilled. It is extremely important to have a good command of English in almost all spheres of one's working life and otherwise but in your career it gives you more confident in delivering both verbal and written correspondence.

Chem Review - 4686 Words

NOT FOR ELECTRONIC STUDENT ACCESS ONLY FOR CLASSROOM USE!! Unit 9: Stoichiometry Practice 1. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula.  · Coefficients show the correct proportions of atoms and molecules in a chemical reaction. They are normal sized numbers placed at the beginning of the chemical formulas in a chemical reaction during the process of balancing. They tell how many of an entire chemical formula is in a reaction.  · Subscripts show the correct proportions of atoms/ions in a chemical formula. They are the small numbers within the chemical formula. They tell how many individual atoms/ions are present. 2. State the Law†¦show more content†¦7. What is plasma?  · Plasma has neither a definite volume nor a definite shape.  · Plasma is often seen within ionized gases.  · Plasma is distinct from a gas because it possesses unique properties: o It contains free electrical charges (not bound to atoms or ions) o It can be produced by heating and ionizing a gas.  · Plasma is often found in areas of the planet/universe where extremely high heats are possible and gases exist to help create the plasma. 8. Put hydrogen bonds, dispersion forces and dipole-dipole forces in order of how strong they are and give an example of each type of attraction.  · Strongest = Hydrogen bonds which have hydrogen attached to a fluorine, oxygen, or nitrogen (Example: Oxygen’s attraction to other hydrogens in a bunch of H2O’s)  · Medium Strength = Dipole-Dipole bonds which occur between the slight positive end of one polar molecule and the slight negative end of another polar molecule (Example: Nitrogen’s attraction to other hydrogens in a bunch of NH3’s)  · Weakest = Dispersion forces which occur in any covalently bonded molecule (Example: Hydrogen’s attraction to other hydrogens in a bunch of CH4’s) Ø Note 1: These are intermolecular forces of attraction so they occur OUTSIDE of the molecules! Ø Notes 2: One covalent bond can be all three types at once. 9. Why do polar compounds tend to have higher melting boiling points than nonpolar compounds? Polar compounds have electrostaticShow MoreRelatedPrecision Chem Dry s Solution Identification874 Words   |  4 PagesPrecision Chem-Dry’s Solution Identification â€Å"Change isn’t simply about embracing something unknown, its’s about giving up something old for something new† (Halvorson, 2012). Change can be hard for many and this can be seen within the organization of Precision-Chem Dry who has not made many changes since opening its doors in 1995 and is now struggling to stay afloat. Previously, a management issue relating to both finances and resources has been identified within the organization of PrecisionRead MorePhysical Examination And Ecg Findings At The Emergency Department Of Any Hospital727 Words   |  3 Pagessome form of myositis, whether it was autoimmune, malignancy associated or drug induced (PBrien, J.The Macroenzymes: A Clinical Review. Mayo Clinic Proceedings. 1993; 68(4):349-354. 7. Stein, W., Bohner, J., Krais, J., Muller, M., Steinhart, R., and Eggstein, M. 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Biovin and M. J. Amiot, 1999. Antioxidant composition and activity of barley (Hordeum vulgare)Read MoreMarketing1077 Words   |  5 PagesCHAPTER II- LITERATURE REVIEW In todays competitive environment it is very important for marketing managers to utilize the complete variety of marketing mix tools to achieve maximum result and one of these marketing tools is sales promotion which has been very important in the food retail division(Sue Peattie; 1998). Nowadays several promotional tools such as coupons, bonus packs, free samples and sweepstakes are very commonly practiced activities offered by manufacturers to its consumers but theRead MoreReflection Essay726 Words   |  3 PagesI have contributed actively to achieve excellence in teaching, scholarship, and service. In the area of teaching, I have successfully taught one of the multi-section core chemistry courses (i.e., CHEM I and CHEM I-lab courses) and an upper-level course, Survey of Instrumentation for non-chemistry majors. 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