Describe two recent discoveries of transuranic elements explaining how they were produced. Firstly what is a transuranic element? Transuranic elements are elements with an atomic number above that of uranium with atomic number Z= 92. All transuranic elements are radioactive. The process of changing one element into another is called transmutation.
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.
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?
EXTRACTION: DETERMINATION OF ITS EFFICIENCY AND CALCULATION OF THE DISTRIBUTION COEFFICIENT Group#4: Wassim Abdel Naby and Bianca Francisco Bachelor of Science degree in Chemistry De La Salle University ABSTRACT The objective of this experiment is to demonstrate the concepts of extraction and to calculate the distribution coefficient. In the process of extraction, amount of acetic acid was the one to be determined, and this was done through the process of titration, indicator used was phenolphthalein and the titrant used was Sodium hydroxide. First, 20 ml aliquot portion of diluted acetic acid in a 125 mL Erlenmeyer flask titrated with Sodium hydroxide. Next, the second flask containing another 20 mL of acetic acid extracted by 20 mL portion toluene, this was done twice due to over titration in the first trial. Lastly, the third 20 mL aliquot portion acetic acid underwent the same procedures with flask 2 but this time with two 10 mL portions of toluene.
The Yucca Mountain Project: An Unstable Area The development of nuclear energy has been beneficial for the United States. Nuclear power has provided energy and played a part in national defense. In 1982 the Nuclear Waste Policy Act was developed and one of the objectives of the policy was to develop repositories for the disposal of radioactive waste and spent nuclear fuel. In 2008 the Department of Energy submitted a license request to the Nuclear Repository Commission to begin construction of a repository at Yucca Mountain. Yucca Mountain is located about 75 miles northwest of Las Vegas.
His entrance into the Manhattan Project was heavily encouraged by his colleague, physicist Robert Wilson. In the Manhattan Project, Feynman was assigned to work in the theoretical division with renowned theoretical physicist Hans Bethe. Feynman's skill and rapid acquisition of the new concepts being developed impressed Bethe to the point where he made Feynman a group leader. Feynman's work partnership with Hans Bethe lead to the creation of the Bethe Feynman formula, which calculated the yield of a fission atomic bomb. His work on the project was so important, that he was present at the detonation of the Trinity Device, the very first atomic explosion created by man.
Nanotechnology In my interview with Kevin Hennessey from the California Nanoscience Institute here at UCSB, he explained about the research of compound semi-conductors. His work is engrossed in Nanoelectronics which involves the exploitation of quantum behavior in nano-scale systems. Compound semi-conductors differ from the traditional silicone based devices and offer superiority. (Hennessey Interview) Development of compound semi-conductors requires the use of technologies on nano-level, one billionth of a meter. "Scientists and companies are envisioning dramatic advancements in the functionality and properties of materials, including improved strength and durability.
Chapter Assessment Answer Key Chemistry: Matter and Change T167 4 CHAPTER ASSESSMENT Date alpha radiation Dalton’s atomic theory radiation radioactivity Chapter Assessment particles involved in a reaction. Chemistry: Matter and Change • Chapter 4 nucleus. A nuclear equation shows the atomic number and mass number of the 19 Both concern changes in atoms. A nuclear reaction involves a change in an atom’s 15. nuclear reaction, nuclear equation atom. in the nucleus of a given atom.
The organization would expand to employ 130,000 people and end up totaling at a cost around $2 billion. An experimental reactor pile was tested in 1942, at the University of Chicago. It generated the first self sustaining-nuclear reaction. Following the reactor pile test, the Manhattan Project established a top secret laboratory at Los, Alamos, New Mexico, to design and build the atomic bomb. At the time they also constructed other secret facilities to create weapons grade plutonium.
Additionally, the uranium used in nuclear reactors undergoes an enrichment process to prepare it, but additional enrichment can generate weapons grade uranium. According to the The Nuclear Age Peace Foundation, the enrichment process is openly shared between nations. In addition to those risks, as nuclear technologies become more widespread the risks of accidental contamination of people and the environment