match and allow to burn. 3. Add a microspatula of NaCl (sodium chloride) to a small quantity of water (about 5mL) in a test tube. Shake the contents of the tube. Next‚ use a dropper to add 10 drops of 0.1 silver nitrate to the NaCl-water mixture. 4. Obtain a piece of magnesium ribbon about 5 cm long. Tear the ribbon into 1-cm pieces. Place two of the pieces into a test tube and a few drops of 6 M HCl (hydrochloric acid). Caution: Use extreme care in handling this acid. It will cause severe burns
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Solidified the egg Egg yolk + bleach Completely dissolved 3. What is the correct safety attire for this lab course? (6 pts) Students must wear lab goggles‚ lab coat‚ and correct shoes which include no open toes‚ open backs‚ or open sides. 4. What is the correct procedure to check out and check in equipment? (6 pts) Students are provided a sheet which indicates the appropriate number of items located in the drawer. Students must count the items and verify they are present in the drawer
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in front of each species to balance each equation and then under each equation identify the reaction type. 1. ____ Cu +_______Cl2 ® _________ CuCl 2. _____ H2O ® ______ H2 + _______ O2 3.______ KBr + _______ AgNO3 ® ______ KNO3 + _______ AgBr 4. ______ CH4 + _______O2 ® ________ CO2 + ________ H2O 5._______ Zn + _______ HCl ® ________ H2 + _______ ZnCl2 6. _____Fe + ______ H2O ® _______ Fe3O4 + _______ H2 7.______ AlBr3 + _______ Cl2 ® _______ AlCl3 + ________ Br2 8.______K2CO3 + _____
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Introduction Silver is a chemical element with atomic number 47 and symbol Ag. It is white‚ soft‚ mallable and ductile metal slightly harder than gold. Silver is extremely flexible‚ this means that it can be converted into both flat sheets and electrical wire. This makes silver is an ideal metal for all kinds of industrial use. Silver occurs in lead‚ Zinc and copper ore deposits. Lead ore is the main source of Silver. In fact‚ 75% of the resources in the world are found in association with other
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g oxygen. a. What is the empirical formula of the compound? [2] b. If its molar mass is 62.1 g/mol‚ what is the molecular formula of ethylene glycol? [1] 4. The temp in kelvin of 4.0 L of hydrogen is increased by a factor of 3 and the pressure is increased by a factor of 4. Calculate the final volume of the gas. [2] 5. How many liters of product at 950 mmHg and O°C is produced by the burning of three liters of acetylene (C2H2) at 5 atm and 20°C
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Arenes The aromatic hydrocarbons also have the name arenes. They contain in their molecule one or more cycles made up from 6 carbon atoms. When the molecule is formed out of a single cycle‚ the hydrocarbons are mono nucleuses; when the molecule contains more than one cycle‚ the hydrocarbons are poly nucleuses. The simplest aromatic hydrocarbon‚ benzene‚ is compound out of just one such cycle; its formula is C6H6. The representation of benzene through a cycle of 6 carbon atoms with 3 double bounds
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element. (the element furthest to the left on the periodic table is written first). 2. End the last element in –ide 3. Add prefixes to show more than 1 atom. (Omit the prefix mon for the first element). Prefixes Mon -1 Di -2 Tri -3 Tetra -4 Penta -5 Hexa -6 Hepta- 7 Octa- 8 Nona- 9 Deca -10 I.E. N2O3 --> dinitrogen trioxide I.E. CO --> carbon monoxide IONIC COMPOUND WITH A POLYATOMIC ION 1. Full name of the metal. 2. Full name of the polyatomic Ion second.
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HACH HR Nitrate Analysis www.d.umn.edu/~dlong/.../Instruction-Nitrate-HR-TNT836.pdf Nitrate. Nitrate. Page 5 of 6. Summary of method. Nitrate ions in solutions containing sulfuric and phosphoric acids react with 2‚6-dimethylphenol to form 4-nitro-2 ... chemical denitrification of nitrate from groundwater via sulfamic acid ... core.kmi.open.ac.uk/display/537620 Nitrate contamination in drinking water can cause methemoglobinemia‚ which is ... sulfamic acid concentration‚ Zn
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highly radioactive and it glows red in the dark 2.Curium is mainly used for scientific research purposes 3. Curium-244 was used in the Alpha Proton X-ray Spectrometer (APXS) which measured the abundance of chemical elements in rocks and soils on Mars. 4. it has a melting point of 1340°C Curium was identified by Glenn Seaborg‚ Ralph James and Albert Ghiorso in 1944 at the wartime metallurgical laboratory at the University of Chicago. Its production was the result of helium-ion bombardment of Plutonium-239
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Peter Debye and his Contributions to Chemistry Abstract Dutch physicist Peter Debye studied under Arnold Sommerfeld‚ and developed several approaches using induced dipole moments and x-ray diffraction to study molecular structures. In 1912 he exhibited the Debye equation for dipole moments‚ a method to determine bond angles and the degree of polarity of covalent bonds‚ which allows the spatial configuration of molecules to be deduced with far greater accuracy than had previously
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