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. Macro creatine kinase BB; evidence for specific binding between creatine kinase BB and immunoglobulin G. J Clin Chem 1981;19:925-30. 8. Maghamiour, N., and Safaie, N. High Creatine Kinase (CK)-MB and Lactate Dehydrogenase in the Absence of MyocardialRead MoreLatent Fingerprint Development Techniques : Ninhydrin And Superglue Fuming1023 Words   |  5 Pageswhen developing, particularly when using water since the print develops even faster. References: 1. Adderhalden; Schmidt, Zeit. Physiol. Chem. 1911, 72, 37. 2. Crown, D. A., Journal of Criminal Law and Criminology 1969, 60, 258-264. 3. Ruhemann, J. Chem. Soc. 1910, 97, 1438. 4. Ruhemann, J. Chem. Soc. 1910, 97, 2025. 5. Adderhalden; Schmidt, Zeit. Physiol. Chem. 1913, 85, 143. 6. Crown, Report of conference on latent fingerprints held at bureau laboratory, Washington, D.C., 1965; 19-21. 7. GilmanRead MoreThe Effect Of Dark Chocolate On Blood Pressure Essay1413 Words   |  6 Pages130:2086S–2092S. Hammerstone, J.F., Lazarus, S.A., Mitchell, A.E., Rucker, R., Schmitz, H.H.(1999): Identification of procyanidins in cocoa (Theobroma cacao) and chocolate using high-perfomance liquid chromatography/ mass spectrometry. J. Agric. Food Chem.47, 490-496. Hannum SM, Erdman Jr JW (2000): Emerging Health Benefits from Cocoa and Chocolate. J Med Food 3, 73–75. Hooper L, Kroon PA, Rimm EB, (2008):. Flavonoids, flavonoid-rich foods, and cardiovascular risk: a meta-analysis of randomized controlledRead MoreThe Determination Of Triglyceride Using Enzymatic Methods1211 Words   |  5 PagesFossati, P., and Prencipe, L. (1982). The determination of triglyceride using enzymatic methods. Clin. Chem., 28: 2077-2081. Fowomola, M.A. (2010). Some nutrients and antinutrients contents of mango (Magnifera indica) seed. Afr. J. Food Sci. 4: 472-476. Fruchart, J. C. (1982). LDL Cholesterol determination after separation of low density lipoprotein. Rev. Fr. Des Lab., 103:7-17. Goupy, P., M. Hugues, P. 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. As described in faculty plan, engaging and motivating students to promote their learning is one of the important teaching objectives as an educator. I have demonstrated e xcellence in teaching byRead MoreInorganic Chemicals Cause Water Pollution756 Words   |  3 Pagesinorganic pollutant. Works Cited Asghar, H. M. a.; Hussain, S. N.; Roberts, E. P. L.; Campen, a. K.; Brown, N. W. (2013) Pre-treatment of adsorbents for waste water treatment using adsorption coupled-with electrochemical regeneration. J. Ind. Eng. Chem., 19 (5), 1689–1696; The Korean Society of Industrial and Engineering Chemistry. Retrieved from http://linkinghub.elsevier.com/retrieve/pii/S1226086X13000488 Boopathy, R.; Karthikeyan, S.; Mandal, A. B.; Sekaran, G. (2013) Adsorption of ammonium ionRead MoreLab Report On Small Molecules1653 Words   |  7 Pages3. 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Investing in such processes benefit organizations in that they are able to achieve their objectives in an organized manner, aligning their output to their stated mission and vision statements (Otley, 1999)