a tremendous variety of oxidation states that appear in its compounds. The oxidation numbers range from Mn (III) in compounds like Mn(NO)3CO to Mn (VII) in KMnO4. Compounds of manganese range in oxidation number between theses two extremes. This experiment involves the preparation of a Mn (III) complex of actylacetone (also named 2‚4-pentanedione) which is a useful starting material for the preparation of other Mn (III) compounds. Manganese (III) complexes are relatively stable and can be prepared
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that is certain‚ apart from death and taxes that is‚ it’s that no matter how hard you try or how noble your intentions may be‚ you’re going to make mistakes‚ and as a result hurt others and yourself. It’s merely human to and isn’t that what we are? So what does happen after we make the inevitable mistakes we do? For all our justifications of making mistakes because we’re human‚ I think that where we differ is with the choices we make after we falter. There’re some who feel so ashamed by the hurt we
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At the start of the novel we are told: Ralph and Jack smiled at each other with shy liking. Yet by the end‚ they are mortal enemies. What happens to ruin their friendship? In order to be able to understand how Jack’s and Ralph’s enmity grew over time we must first understand what kind of character these two individuals are. In his novel “Lord of the Flies” William Golding uses a group of boys‚ stranded on a deserted island‚ to show the malicious nature of mankind. The two main characters are
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learn and adapt very quickly to these technological changes and use them effectively. Technology is advancing so much and so fast that us humans are starting lose track of it. Shift Happens is a video that shows facts about the world and how technology is evolving. In the original video of Shift Happens which was made in 2006 shows many facts about technology 11 years ago. The video stated‚ “ There were more than 2.7 billion performed on google in a month”. Another statement was “ 230‚000
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thing in automotive fuel may very well be hydrogen. Automakers rapidly are closing in on making hydrogen fuel cell vehicles an everyday fact of life‚ with several test models set to debut over the next few years. Hydrogen fuel cells to power vehicles are desirable‚ experts say‚ because hydrogen is a renewable fuel that can be used to create electricity to run cars. A chemical reaction between oxygen and hydrogen produces the electric power‚ and when pure hydrogen is used‚ the only emission from the tailpipe
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food coloring on top of the vegetable oil. Then we put the Alka-Seltzer in it. When it went in there it pushed the food coloring up into the vegetable witch made it go slow so it made bulbs of food coloring so it looked like a lava lamp. Why did this happen because‚ well the Alka-Seltzer reacted with the water naturally so the fizz pushed the food coloring up. So when it went up it ran into the vegetable oil witch is thick so it made it go into bubbles and if you have ever watched a lava lamp the lava
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What does religion really mean to the Millennial Generation? I grew up in a family of Lutherans‚ and went to church on a daily basis‚ until I got confirmed. I am a spiritual person who believes in god‚ but the church is not what it used to be. In the two viewpoints that I read‚ one of the authors believes that Millennials are less likely to join traditional catholic or protestant religious institutions. The other believes that Millennials are embracing old religious ways to find inspiration. The
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- Quasi Experimental Design: If the researcher lacks control over the assignment of participants to conditions and does not manipulate the causal variable of interest‚ the design is quasi experimental. o Quasi Experiments do not have internal validity because participants are not randomly assigned to conditions and the researcher may have no control over the independent variable. - Basic Confounds in Quasi Experimental Design are : o History o Maturation (Emotional‚ Physical & Psychological)
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Copper and Zinc Composition Percentages in Pennies Introduction. The United States Mint sends copper and zinc to a fabricator‚ which creates coin-sized discs called planchets. The planchets undergo the coining press at the Mint where they are stamped as genuine United States legal tender coins. The purpose of this experiment is to determine the accuracy of the copper and zinc composition percentages in a random sampling of pennies. The penny was dissolved to make aqueous copper ions and four copper
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Hydrogen Producing Bacteria was incubated in a complete - mix digester with work volume 1.7 L‚ seeded with sludge obtained from the local sewage treatment plant. Each liter of feed medium was composed of the following : 7 g of glucose‚ 1 g NaHCO3 ‚ 500 mg of NH4Cl ‚ 250 mg KH2PO4 ‚ 250 mg K2HPO4 ‚ 320 mg of MgSO4 • 7H2O ‚ 50 mg of FeCl 3 ‚ NiSO4 32 mg ‚ 50 mg CaCl2‚ Na2BO7 7.2 mg H2O ‚ 14.4 mg (NH4) 6MO7O24 H2O ‚ 23 mg of ZnCl2 ‚ 21 mg CoCl2 H2O ‚ 10 mg CuCl2•2H2O and 30 mg of MnCl2•4H2O . The reaction
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