Scheme of Analysis for Lab 2 Unknown Sample Description Phase‚ color‚ odor‚ crystalline or gel-like? If crystalline‚ what is crystal shape – needle-like or powdery? Does it look like a pure substance or a mixture? How many components appear to be present? Tests on original sample Flame Test Bushy yellow‚ orange flame – Na+ is present and possibly K+ and NH4+. Pink-purple flame – K+ is present and Na+ is not. (Possibly NH4+) No color or faint trace Na+ - NH4+ is possible‚ K+ and Na+ are
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Ocean County College Department of Chemistry Liquids and Solids Date Submitted: June 21‚ 2015 Date Performed: June 19‚ 2015 Lab Section: Chem-181DL1 Course Instructor: Prof. Amal Bassa Purpose The purpose of this experiment was to determine the boiling point of isopropyl alcohol and determine the melting point of acetamide. Procedure To begin I tied the test tube and thermometer together and inserted an inverted closed-end capillary tube into the test tube. I then
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accurately predict the colors of compounds. Answer: c 9.2 Valence Bond Theory 2. Which of the following statements is/are CORRECT? 1. The overlap between an s orbital and a p orbital is called a pi-bond. 2. The overlap of two s orbitals in H2 is called a sigma bond. 3. HF is formed from the overlap of a hydrogen 1s orbital with a fluorine 2s orbital. a) 1 only b) 2 only c) 3 only d) 2 and 3 e) 1‚ 2‚ and 3 Answer: b 3. Which of the following statements concerning hybrid orbitals
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The purpose of this report is to explain the process and steps used to identify a certain microorganism referred to as the unknown. Materials and Methods A test tube with an unknown microorganism will be retrieved. Once the test tube is retrieved‚ a steak for isolation will be completed in order to produce isolated colonies of the organism on an agar plate. The unknown test tube with the bacteria is flame sterilized using a Bunsen burner. Once the bacterium test tube has been flame sterilized
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species of bacteria are biological tests‚ including the determination of the types of nutrients a cell can use‚ the products of its metabolism‚ and the response to specific chemicals. Other factors that can assist in identification of bacteria are their ecological habitats and more advanced methods such as genetic and molecular composition. Using various techniques one is able to distinguish and ultimately assign then genus and species of the unknown bacteria. Methods: Gram Staining: The Gram stain
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waste during their production or use than those produced from fossil resources [Dellomonaco et al‚ 2010]. However fossil fuels still dominate energy consumption‚ with a market share of 87%. Renewable energy continues to gain but today accounts for only 2% of energy consumption globally. Meanwhile‚ the fossil fuel mix is changing as well. Oil‚ still the leading fuel‚ has lost market share for 12 consecutive years. Coal was once again the fastest growing fossil fuel‚ with predictable consequences for carbon
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Synthesis of 1-Bromobutane from 1-Butanol Reference: Discovering Organic Chemistry in the Laboratory; John R. Ganson Ph. D‚ Revised 2011 by Alfredo Mellace Ph. D www.Aldrich.com Purpose: To synthesize 1-bromobutane from 1-butanol via SN2 reaction. Alcohols are converted into the alkyl halides adding an aqueous solution sodium bromide. The sulfuric acid acts as a catalyst in converting the OH functional group of butanol‚ to a better leaving group. In order for this reaction to synthesis 1-Bromobutane
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Objective:- The aim of this experiment was to find the molar mass of unknown volatile liquid under known temperature and pressure. Introduction Molar mass or gram molar mass is the mass of the substance under consideration without distinguishing whether a substance is an element ‚ a molecule or an ionic compound. These elements‚ molecules or ionic compound could be solid gas or liquid. The molar mass of gas or vapor could be measured if the gases obey the law of Ideal Gas . The mass of
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How is the Australian Unknown Soldier significant? What makes him significant? The Unknown Soldier represents a part of Australia’s history and also represents the ANZAC soldiers that fought in World War One. He holds all the values and qualities that the ANZACs were said to evident in their everyday lifestyle. He is an iconic symbol for Australia and its military history as well a representative of commemorating the sacrifices the soldiers made for their country. The ANZAC legend was written
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UNKNOWN LAB REPORT UNKNOWN NUMBER 54 Ron Williams 7-28-05 Bio 205 Prof. Curlee Fall 2005 Purpose There are many reasons for knowing the identity of microorganisms. The reasons range from the knowing the causative agent of a disease in a patient‚ so as to know how it can be treated‚ to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that have been learned so far in the microbiology laboratory
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