palladium on carbon 13 of 22 4/16/12 9:15 PM StudyBlue Flashcard Printing of Lab Final 2211L UGA http://www.studyblue.com/servlet/printFlashcardDeck?deckId=... Which alkyl halide would react fastest in a nucleophilic substitution using silver nitrate in ethanol? 3-bromo3-methylpentane bc its sn1 Which alkyl halide would react fastest in a nucleophilic substitution using sodium iodide in acetone? 1-bromopentane bc its sn2 What is the name of the chemical reagent used as the source of Br2 in the preparation of diphenylacetylene? pyridinium hydrobromide perbromide type of stationary phase column length column temperature rate flow of the carrier gas List the 4 general factors that affect the separation obtained on a gas chromatograph What specific technique is used to collect/isolate your purified unknown compound at the end of the recrystallization experiment?
25.0 cm3 of a 0.10 moldm-3 solution of sodium hydroxide was titrated against a solution of hydrochloric acid of unknown concentration. 27.3 cm3 of the acid was required. What was the concentration of the acid? 3. 25 cm3 of a solution of sodium hydroxide reacts with 15 cm3 of 0.1 mol/dm3 HCl.
Reactions Lab David Vaghari INSTRUCTOR: Dr. Chernovitz Monday, July 23, 2012 Oxygen Production Introduction In this lab, potassium chlorate will be decomposed producing oxygen gas and potassium chloride. The hypothesis is that the reaction will yield 3.916 grams of oxygen gas. Materials Test tube 10 grams potassium chlorate Bunsen burner Procedure Step 1. Obtain a test tube, place a 10 gm of potassium chlorate. Step 2.
Ocean County College Department of Chemistry Ionic Reactions Submitted by XXXX Date Submitted: July 11, 2014 Date Performed: July 9, 2014 Lab Section: Chem-180 DL Course Instructor: L. Stage Purpose The purpose of this experiment is to: -write balanced equations -study ionic reactions -write net ionic reactions Procedure -In the 96-well plate -place 2 drops of cobalt (II) nitrate into seven of the A wells -place 2 drops of copper (II) nitrate into seven of the B wells -place 2 drops of iron (III) nitrate into seven of the C wells -place 2 drops of the barium nitrate into seven of the D wells -place 2 drops of nickel (II) nitrate into seven of the E wells -The next drops go in the numbered columns -place 2 drops of sodium phosphate into five vertical wells under 1 -place 2 drops of sodium iodide into five vertical wells under 2 -place 2 drops of sodium sulfate into five vertical wells under 3 -place 2 drops of sodium chloride into five vertical wells under 4 -place 2 drops of sodium bicarbonate into five vertical wells under 5 -place 2 drops of sodium carbonate into five vertical wells under 6 -place 2 drops of sodium hydroxide into five vertical wells under 7 -After I was done with the exercise, I cleaned up and put away my LabPaq. Observations and Results le | Negative Ions (Anions) | Positive Ions (Cations) | Solubility of Compounds | All negative ions are _____ with | Alkali ions | Soluble | All negative ions are _____ with | Hydrogen | Soluble | All negative ions are ______ with | Ammonium Ions | Soluble | Nitrate NO3 - ions are _________ with | All positive ions | soluble | Acetate CH3COO- ions are ______ with | All positive ions | soluble | Chloride, Cl- Bromide Br- Iodide I- | AG+, PB ^2-, HG2^2+, CU+All other positive ions are | Insolublesoluble | Sulfate SO4 2- |
(Name) (Subject) (Name of Professor) (Date) There is no denying that X-rays are a potential threat to a person's health, but that threat also applies to the Radiologic Technician. X-rays are performed on a patient as directed by a Physician to find the cause of the physical malfunction in the body. This is so the patient does not have to go through life with the same pain day after day. However, a careful balance must be struck because of radiation. The health of RadiologicTechnologists and the patient are at risk when concerning X-rays because of the gamma radiation rays, yet X-rays are vital to finding out what the medical issue is.
Unlike medications, supplement Dietary Supplements 3 makers do not have to prove their products are safe or effective. The FDA, however, can force a supplement from the market if it proves it is unsafe (nutrition.about.com, n.d.). Dietary supplements can be good for the body if there are substances lacking in the body. If a person has diseases, supplements can help control them. It is best to consult a doctor before taking supplements because they can interact with medications, causing bad reactions.
Niepce had been experimenting with iodized pewter and silver-coated metal plates. Daguerre perfected the process by sensitizing the silver plates with iodine fumes. In 1837 and 1838 Daguerre was trying to raise money for his “daguerreotype” invention. Francois Arago, director of the Paris Observatory influenced France to purchase Daguerre’s invention thereby making it available worldwide. In 1852 Napoleon III became emperor.
The Chlor-alkali Industry In 1800, Cruickshank was the first to prepare chlorine electrochemically, however; the process was not very important until the development of an adequate generator and of synthetic graphite for anodes in 1892. These two developments made the chlor-alkali process possible on an industrial scale. In 1885 the diaphragm cell process was introduced, followed by the mercury cell process in 1892. Instead, the membrane cell process was only developed much later, in 1970. Since then, activated titanium anodes in the diaphragm have substituted graphite anodes and mercury cell processes.
The recommended maximum allowable concentration for a daily 8-hour time-weighted exposure is 0.1 parts per million. The fluorine-containing mineral fluorspar (or fluorite) was described in 1529 by the German physician and mineralogist Georgius Agricola. It appears likely an unknown English glassworker first prepared the crude hydrofluoric acid in 1720. In 1771 the Swedish chemist Carl Wilhelm Scheele obtained hydrofluoric acid in an impure state by heating fluorspar with concentrated sulfuric acid in a glass retort, which was greatly corroded by the product; as a result, vessels made of metal were used in subsequent experiments with the substance. The nearly anhydrous acid was prepared in 1809, and two years later the French physicist André-Marie Ampère suggested that it was a compound of hydrogen with an unknown element, analogous to chlorine, for which he suggested the name
The absence of lead shielding means that an individual is susceptible to damage their DNA (deoxyribonucleic acid) due to the interactions of the electrons within an individual’s body. Overall, the x-ray room is designed in a manner whereby the radiation can be attenuated to the lead-lined material built on the walls and