(0 net carbon emission) The fundamental physical components of a typical dual-chamber MFC are the electrolyte‚ an anode and a cathode partitioned by a proton exchange membrane as shown in figure1 (Du‚ Li and Gu 2007). At the anode‚ microbial respiration oxidizes available substrates to carbon dioxide results in liberation of electrons and protons. These electrons are transported out of the cell to the electrolytes via electrochemically active carriers‚ also known as
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difference between atoms of different elements. - The number of protons in an atom determines the element to which the atom belongs. - The atomic number of an element shows: * The number of protons in the nucleus of an atom of the element * The number of electrons in the neutral atom of that element * The position of the element in the Periodic Table Mass number (A) - For any atom‚ the mass number is the sum of the number of protons and the number of neutrons. Particle name | Relative
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Effect of ions on living organisms (24 marks) An ion is a charged atom or molecule. This is because it does not have an equal amount of protons and electrons‚ therefore giving the atom an overall charge. An example of an ion is ‚ this is sodium and the plus sign represents an overall positive charge. Ions are very important to living organisms as they are essential for life‚ they play an important role within the cell allowing mechanisms within the living organisms such as respiration‚ to take
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aerosols 6. A naturally occurring ___________ is fog. v. aerosol w. colloid x. plasma y. liquid z. solid 7. The atomic number of an element is given by the number of __________ in its nucleus. {. protons |.
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On June 8th 793ce foreign ships brought an unexpected surprise to the Lindisfarne monastery‚ the Northmen had arrived. This attack marked the beginning of the Viking Age‚ an era of raids that shook the western world until its end at the battle of Hastings in 1066. These Northmen arrived and promptly the “heathen miserably destroyed God’s church by rapine and slaughter .” It is important to note that the Vikings had an oral tradition and no known sources exist depicting events from their perspective
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Topic 8: Cell respiration and Photosynthesis 8.1 Cell respiration 8.1.1 State that oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing hydrogen‚ whereas reduction frequently involves losing oxygen or gaining hydrogen Oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen
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role of atomic number in MiniLab: Modeling Isotopes‚ p. 102 How Atoms Differ 2 sessions 1 block determining the identity of an atom. 6. Define an isotope and explain why atomic masses are not whole numbers. 7. Calculate the number of electrons‚ protons‚ and neutrons in an atom given its mass number and atomic number. Section 4.4 8. Explain the relationship between Careers Using Chemistry: Radiation Unstable Nuclei and Radioactive Decay 2 sessions 1 block unstable nuclei and radioactive decay
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OMEPRAZOLE. Omeprazole was one of the first proton pump inhibitors bought onto the market in the late 1980’s‚ they appear to be the drug of choice for most gastric related disorders (Der‚ 2003) Omeprazole is the author’s drug of choice and it will be demonstrated through a drug framework. This drug has particular interest because of the gastroenterology nursing environment the author works in. Discussion based around the drug framework will include‚ structure‚ formulation‚ indications for use
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Zwitter ion C * : α- carbon : α- amino acid NH2 : α- amino group‚ basic (proton acceptor) COOH : α- carboxylic group‚ acidic (proton donor) R : side chain of amino acid Classification of amino acids depending on the nature of side chain: * Neutral * Basic amino acid : with extra amino group (NH2) in its side chain
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Preparation and purification of acetylsalicylic acid Results and Data treatment (A) Preparation of aspirin i) Details about the reactants Reaction of the acetylation of salicylic acid is following From the balanced reaction above‚ it can be seen that the stoichiometry between salicylic acid and acetic anhydride is 1: 1. In this experiment‚ 21.7mmol of salicylic acid was used to react 6.0mL of acetic anhydride and salicylic acid was limiting reagent. The expected amount of salicylic
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