Experiment 8: Redox: Analysis of the Oxidizing Capacity of Bleach PURPOSE In this experiment, you will show how redox reactions can be used to quantitatively determine the amount of oxidizing agent in liquid hypochlorite household bleach. There are two oxidation-reduction reactions for determining the oxidizing capacity of bleach. Initially an excess of iodide ions are added to a bleach solution. The iodide ions are oxidized to iodine after the solution has been acidified. Starch is added to the
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Question 1: Why should a magnesium ribbon be cleaned before it is burnt in air? Answer : Magnesium is an extremely reactive metal. When stored, it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper for removing this layer so that the underlying metal can be exposed to air. Question 2: Write the balanced equation for the following
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ENERGY TECHNOLOGY S.JITENDRA PAL Department of Chemical Engineering National Institute of Technology Karnataka Surathkal-Karnataka. Assistant Professor Fundamentals of energy and its impact on society and the environment. What is energy? • Energy :defined as the ability or capacity to do work. Energy is measured in BTU (British Thermal Unit) or Joule • According to Max Planck, energy is defined as the ability of a system to cause external action. • The term energy carrier – thus a carrier
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The early universe was made mostly of hydrogen, with some helium and trace amounts of other elements. This matter clumped together under its own gravitational pull to form clouds. Within these clouds, scientists think hydrogen atoms (which contain one proton and one electron) bonded with negatively charged hydrogen ions (one proton and two electrons) to form molecular hydrogen, consisting of two hydrogen atoms chemically bonded. This chemical reaction served to cool and condense the clouds until they
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the radiopharmaceutical is difficult to produce/mine it will be expensive to use and may not be economically suitable to use for patients. Technetium-99m is the most widely used radioisotope, this is because of the generators used to create the element from Molybdenum-99. This means that it is the must inexpensive radiopharmaceutical.
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* Sodium ACID+BASE= SALT (NEUTRALIZATION) INDICATOR- a compound that will change color in the presence of an acid or base ANTHOCYANIN PIGMENT- natural indicator PERIODIC TABLE ATOM ATOM ATOM- building block of matter 1,000 ELEMENTS= 1,000,000 COMPOUNDS ELEMENT COMPOUND- more than one element in a mixture MIXTURE- combination of more than one material BIOLOGY BIOLOGY BIOLOGY- Bio (Life) -Logy (Study) BONTANY- Plants- FLORA ZOOLOGY-Animals-FAUNA
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Steven Weinberg: “Against Philosophy” (from “Dreams of a Final Theory”). Physicists get so much help from subjective and often vague aesthetic judgments that it might be expected that we would be helped also by philosophy, out of which after all our science evolved. Can philosophy give us any guidance toward a final theory? The value today of philosophy to physics seems to me to be something like the value of early nation-states to their peoples. It is only a small exaggeration to say that
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General Chemistry II Dr. Michael Blaber Electrochemistry Balancing Oxidation-Reduction Reactions In balancing redox reactions, gains and losses of electrons must be balanced * In many cases the equation can be balanced without explicitly considering the transfer of electrons. For example: Zn(s) + 2H+(aq) Zn2+(aq) + H2(g) * However, many redox reactions are more complicated and cannot be balanced without taking into account the number of electrons lost and gained during the reaction
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Minireviews Electronic Materials M. Leskelä and M. Ritala Atomic Layer Deposition Chemistry: Recent Developments and Future Challenges** Markku Leskelä* and Mikko Ritala Keywords: atomic layer deposition · microelectronics · nitrides · oxides · thin films ew materials, namely high-k (high-permittivity) dielectrics to replace SiO2, Cu to replace Al, and barrier materials for Cu, are revolutionizing modern integrated circuits. These materials must be deposited as very thin films on structured
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its structure, which contains the intercellular matrix known as the plasma. 2 Composition of Blood See Marieb, Figure 17.1 Plasma - the blood’s liquid portion •water 91+% 55% •solutes - nutrients, wastes, blood gases, electrolytes, regulatory molecules •proteins - albumin, fibrinogens, globulins Plasma is the intercellular matrix of the blood. 3 Plasma Proteins • albumins – 65%, osmolarity and viscosity • globulins – transport and storage proteins Transferrin carries iron in blood Ferritin
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