carbon center. In this experiment‚ our nucleophile is 1-methylimidazole and we will use it to attack 1-bromobutane (our alkyl halide) to form 1butyl-3-methylimidazolium bromide. We will refer to this molecule as [C4−mim]Br‚ C4 referring to the 4 carbon units‚ mim referring to the methylimidazole unit‚ and Br to the bromide counter ion. After an anion exchange reaction‚ you will form [C4-mim]PF6‚ which is a well-known ionic liquid. Most ionic compounds (salts) have very high melting points
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million eggs during a single breeding season. The only natural control is a species of diving duck. Hot water will kill zebra mussels (only useful for a very small bilge!). Chlorine will also kill them‚ but is very toxic to marine life. Potassium‚ bromine‚ ozone and ultraviolet light are less toxic alternatives are difficult to apply under water. A novel experiment was reported at the Sixth International Zebra Mussel and other Aquatic Nuisance Species Conference in March 1996.zebra mussel’s are about
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Common Elements/Uses Element Common Uses &/or Descriptions Aluminum A light metal used in making airplanes‚ buildings‚ pots and pans‚ etc. Bromine Used in photography‚ medicines‚ insecticides‚ etc. Calcium A soft‚ metallic chemical element found in limestone‚ marble‚ chalk‚ etc. Carbon Found in coal‚ oil‚ gas‚ living things‚ and inks. Chlorine Used in bleach‚ in chemical to kill germs in swimming pools‚ and found with the element sodium in table salt. Chromium A shiny metal usde on bumpers
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amine groups‚ which are electron-donating. Chlorobenzene contains chlorine‚ which is electron-withdrawing. Phenol contains a hydroxyl group. Oxygen‚ being electronegative‚ was suspected to be electron-withdrawing and hence it took longer time for the bromine to react with benzene. Nitrophenol contains two substituents‚ one of which is a nitro group which is electron-withdrawing. 2.) Sources of error if actual and theoretical doesn’t agree. Contaminated chemical reagents Inappropriate proportions Uncontrolled
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events‚ it is essential to revisit the ethics of physician involvement in lethal injections. On April 24th‚ 2017‚ it was reported that “the Arkansas Department of Correction leveraged its medical director’s medical license [to acquire] vecuronium bromide‚ a muscle relaxant.” While physicians have autonomy to decide whether they will participate
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Zinc and Hydrochloric-Acid Written By Kahlil Zione Date:02/02/05 Abstract: We observed the reaction between zinc and hydrochloric acid and recorded it in a table and learned wether the percentage of zinc is effected by the amounts of both substances added to the solution. Introduction The purpose of this experiment is to determine if the amount of zinc and hydrochloric acid will effect the percentage of the zinc in the out coming solution. We are reacting zinc metal with hydrochloric
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certain types of doze alarm-type alarm clocks.It can turn into liquid at room tempurature.It boils at 656.11 F. Mercury is the only metal that is a liquid at standard temperature and pressure. The only other liquid element under standard conditions is bromine‚although the metals rubidium‚ cesium‚ and gallium melt just warmer than room temperature. Mercury has a very high surface tension‚ so it forms rounded beads of liquid.
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at 1500 feet the pressure is 46 atm. (For a helium–oxygen mixture‚ the solubility of helium will depend on its initial partial pressure‚ which will be less than 1.0 atm.) An experiment calls for 36.0 g of a 5.00% aqueous solution of potassium bromide. Describe how you would make up such a solution. A 5.00% aqueous solution of KBr has 5.00 g KBr per 100. g solution. The remainder of the 100. g is water: 95 g. We can use this ratio to determine the mass of KBr in 36.0 g solution: Since
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Lovely Professional University‚ Punjab Course Code Course Title Course Planner Lectures CHE883 ENVIRONMENT CHEMISTRY 15316::Pushp Lata Course Category Tutorials Practicals Credits Courses with numerical and conceptual focus 3.0 0.0 0.0 TextBooks Sr No Title Author T-1 Environmental Chemistry Edition Year Publisher Name Colin Baird‚ Michael Cann 4th 2008 W.H. Freeman and company Reference Books Sr No Title Author Edition
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not). 1. 2Al + 3Cl2 ---> 2AlCl3 comb.; yes rxn 2. NH4Cl + NaC2H3O2 ---> NH4C2H3O2 + NaCl d.r.‚no rxn‚ all soluble 3. 2PbO2 ---> 2PbO + O2 dec.; yes rxn 4. 2AlBr3 + 3Ba(OH)2 ---> 2Al(OH)3 + 3BaBr2 d.r.‚ yes rxn 5. Iron III iodide + 3silver bromide ---> FeBr3 + 3AgI d.r.‚ yes rxn 6. 2LiCl + I2 ---> 2LiI + Cl2 s.r‚ no rxn‚ I not replace Cl 7. 4K + O2 ---> 2K2O comb. 8. MgCO3 ---> MgO + CO2 dec.; yes rxn 9 2AlCl3 + 3MgCO3 ----> Al2(CO3)3 + 3MgCl2 d.r.‚no rxn‚ MgCO3 insol. 10. Zn + H2SO4 --->
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