and four of your lab will be helpful. Formula Number of Bonds and Non-Bonding Electron Pairs Shape Description CO32- 3‚0 Trigonal planar SO2 2‚1 Bent H2CO 3‚0 Trigonal planar SO3 3‚0 Trigonal planar SO32- 3‚1 Trigonal pyramidal NO2- 2‚1 Bent PO33- 3‚1 Trigonal
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Chemistry Review (mid-term) 1. Use the equation for atomic mass to answer the following questions. (http://johnheilchem10.escuelacampoalegre.wikispaces.net/file/view/average+atomic+mass+calculations+-+3.pdf) 1. Argon has three naturally occurring isotopes: argon-36‚ argon-38‚ and argon-40. Based on argon’sreported atomic mass‚ which isotope do you think is the most abundant in nature? Explain. 2. Copper is made of two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu.
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KWAME NKRUMAH UNIVERSITY OF SCIENCE AND TECHNOLOGY DEPARTMENT OF CHEMISTRY TITLE: ANALYSIS OF COPPER IN BRASS BY UV-VISIBLE SPECTROSCOPY NAME: OPOKU ERNEST DATE: 21ST JANUARY‚ 2014 Page 1 of 9 TITLE: ANALYSIS OF COPPER IN BRASS BY UV-VISIBLE SPECTROSCOPY AIMS AND OBJECTIVES: By the end of this experiment‚ the student should be able to demonstrate the following proficiencies: 1. To determine the percentage of copper in brass by UV-visible spectroscopy. 2. Properly calibrate
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Experiment 6 :Observation | KA2 | KA3 | Weight of test-tube + solid / g | | | Weight of empty test-tube / g | X1 | X2 | Weight of solid / g | | | Initial temperature of acid / °C | | | Final temperature of mixture / °C | θ1 | θ2 | Temperature change / °C | | | Discussion :[In the experiment sheet‚ the is an error where questions in (c)(i) should be "the heat change involved the reactions involving KA2 and KA3] (c). i : q1 = mcθ1 ; q = (30.00)(4.18)( θ1) = q1 q2 =
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N=O dimethylamine HCl N‚ Nitrosodimethylamine N=O Example N CH3 NH – CH3 NANO2 HCl Tertiary amine forms only salt Example (CH3)3 + NaNO2 + HCl → [ ( CH3) NH ] – NO2 + NaCl HCl Reaction with acid halides – Acid halides react with amines to form substituted amides. Example Cl O | CH3NH2 ∥ . . CH3 – CH2 – C = O CH3
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studied in the U.S. beginning in the 1950s‚ acid rain is precipitation in the form of rain‚ snow‚ hail‚ dew‚ or fog that transports sulfur and nitrogen compounds from the high atmosphere to the ground. Sulfur dioxide (SO2) and nitrogen oxides (NO‚ NO2) are bi-products from burning fuels in electric utilities and from other industrial and natural sources. These chemicals react with water‚ oxygen‚ carbon dioxide‚ and sunlight in the atmosphere to form sulfuric and nitric acids. The acids reach the
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Academic Prompt Iliad SHS Academic Prompt No2. ILIAD by HOMER English IV Mrs. Carmelita A. Matira A. Author’s Background ( 1 paragraph B. Graphic Organizes (Table 2 columns) 1. Character List Achaeans Trojans Gods and goddesses with epithets 2. Simile and metaphor ( 10 each ) C. Comprehension Questions (Note : Limit your answer in one paragraph only but logically) 1. Book I a. What character portrayal is presented by the personages in Book I
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particularly their central relationship with land and waters. Tribal enterprise began to increase considerably during the 1990s across Australia. It was not until 1992 that the High Court in Australia made a popular decision in Mabo v Queensland (No2) [1992] 175 CLR1‚ which held that the common law of Australia could recognise and effectively give the aboriginals rights and interests in land and waters under their traditional indigenous laws and customs‚ herein referred to as Native Title. So Native
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AKPAN‚ EKEMINI PAUL ENMT 380 Air Quality Management Examination 3rd Session-Spring 2014 Part I - Multiple Choice and True/False Questions. Each question weighs 1 point. Please use blue ink to write directly on this document. After completion‚ submit the file using your last name to the appropriate folder. 1. Which criteria pollutant is colorless‚ odorless‚ and poses a risk to humans‚ even in
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Drug Metabolism Prof. Patrick Davis Basic Medicinal Chemical Principles PHR 143M Fall-08 Importance of Drug Metabolism • The basic premise: Lipophilic Drugs --> Hydrophilic Metabolites (Not Excreted) (Excreted) • Water soluble => increased renal excretion -anddecreased tubular re-absorption of lipophilics. Importance of Drug Metabolism CH 3 CH 2OH CHO COOH OH O C 2H 5 Δ1-THC PC=6000 - O C O O HO OH COO OH OH Excreted Form O C 2H 5
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