source mineral of rare earths and comment on its relative abundance. 7. Compare the electronic structures of Actinides with those of Lanthanides and comment on their bonding 8. Compare and contrast the pyramid of oxidation states found in the first row of the transition elements with the oxidation states found in lanthanides and actinides 9. Write the number of unpaired electrons in La3+‚ Ce4+‚ Lu3+‚ Yb3+‚ Gd3+‚ Eu2+‚ Pu4+‚ U6+. 10. Why is thorium considered important from industrial view point? 11. What
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iron replaces the copper in cupric sulfate to produce ferrous sulfate and copper metal. As a oxidationreduction reaction‚ the copper in cupric sulfate is reduced and the iron powder is oxidized. (Copper goes from a +2 oxidation state to a zero oxidation state while iron goes from a zero oxidation state to a +2 oxidation state.) 2 Purpose Statement We will determine the meaning of a mole and stoichiometry relations using oxidationreduction and single replacement reaction. We will determine the reaction that iron
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mentioned there are two general types of corrosion chemical and electromechanical. Each form of corrosion converts some metal into compounds like oxides‚ hydroxides and sulfates. These compounds are created when oxidation and reduction take place simultaneously on a metallic surface. Oxidation is where electrons are removed from the metal and reduction is where electrons are used in order to convert oxygen and
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Chemical Reactions and Equations Chemical Reaction: The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance
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“a molecule capable of inhibiting the oxidation of other molecules. Oxidation is a chemical reaction that transfers electrons from a substance to an oxidizing agent. Oxidation reactions can produce free radicals. In turn‚ these radicals can start chain reactions. When the chain reaction occurs in a cell‚ it can cause damage or death of the cell. Antioxidants terminate these chain reactions by removing free radical intermediates‚ and inhibit other oxidation reactions. They do this by being oxidized
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Aim To prepare a standard iron (II) solution To determine the concentration of potassium permanganate solution Instructions Preparation of Standard Iron (II) Solution 8g of hydrated iron (II) ammonium sulfate is weighed accurately using a 50mL beaker. The salt is transferred to a 250mL volumetric flask using a filter funnel‚ washed down with distilled water. The container is rinsed carefully and the rinsing is added to the volumetric flask. 100mL of water is added slowly to the volumetric
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otherwise nitrogen is largely “filler‚” adding inert bulk to the atmosphere. In contrast‚ oxygen gas (O2) is chemically very active‚ combining readily with other elements in the process of oxidation. Fuel combustion is a rapid form of oxidation‚ while certain types of rock decay (weathering) are very slow forms of oxidation. Living tissues require oxygen to convert foods into energy. The remaining 1 percent of dry air is mostly argon‚ an inactive gas of little importance in natural processes‚ with a very
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Lab: Comparison of Three Isomers of Butanol Pre-lab: 1. Write the general reaction of an alcohol and HCl. 2. What would the solubility be of an alcohol in water. 3. What would the solubility be of an alkyl halide in water? 4. What is the purpose of KMnO4 in the reactions? Safety: Concentrated hydrochloric acid is corrosive and the vapour is very irritating to the respiratory system. Avoid contact with skin‚ eyes‚ clothing‚ and the lab bench. Wear eye protection and a lab apron.
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a cell breaks down sugar or other organic compounds to release energy used for cellular work). This process includes glycolysis‚ pyruvate oxidation‚ the kreb cycle‚ and the electron transport chain. The theoretical ATP output by this process is 36 ATP per glucose (C6H1206). Lipids are broken down to fatty acid chains and through a process called beta oxidation; the fatty acid chain is broken down to many acetyl-Co A‚ which then enters cellular respiration at the Kreb cycle. Proteins are broken down
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severe diseases. Grapes The consumption of grapes is very beneficial for preventing an oxidation of cholesterol which is responsible for a plaque build-up on the artery walls. The ability of the grapes to keep your arteries clean is owed to their content of flavonoids‚ quercetin‚ and resveratrol. The grapes can help you to
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