What is the molar concentration of an acetic acid (CH3COOH) solution containing 3.21 moles in 4.50 liters? (A: 0.713 M) 3. How many moles of KI are present in 125 ml of 0.500 M KI? (A: 0.0625 mol KI) 4. How many moles of ammonia (NH3) are present in .360 L of 2.13 M NH3 solution in water? (A: 0.767 mol NH3) 5. How many liters of water are required to prepare a solution of 7.25 M MgCl2 from 4.89 moles of MgCl2? (A: 0.674 L) 6. What is the molarity of a solution prepared by
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or homicide 3.How can digestion rates give information to forensic scientists about the time of death? When someone dies the digestion of any food eaten ceases. 4.What is mummification? Mummification is the drying of the body and its tissues. 5.How can human bones give forensic scientists an indication of age? Describe some of the aspects that would give this information. They focus on the lengths of the bones to see if they compare with the average age range‚ They also look for what condition
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Women are the most disproportionate group in the world . Knowing that is tough‚ but living it is harder. I have some privilege in society being a cis-gendered woman but I’m still at a disadvantage. Growing up‚ I had a smart mouth; I was always questioning things and ‘talking back’ as any child does. When I was in third grade‚ just moved into a new school being the little smart child I was answering the teacher’s questions just like how I did at my old school. There was another little girl who was
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Lactic Acid Bacteria Amanda Perry Many persons are oblivious to the fact that when they consume certain delicious food products like yogurt‚ buttermilk or cheese‚ they are actually eating live bacterial biomass which has acidified the milk content and contains a mixture of bacterial slime layers. Perhaps it is a blessing that most people are unaware because when most hear the word ‘bacteria‚’ their first thought is of a microscopic unicellular organism that causes various types of diseases especially
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In Chapters 5 and 6 of “The Eyes Were Watching God” Janie Crawford‚ a beautiful young woman who takes orders from a tyrant of a husband. Her husband Joe Stark seemed to be the perfect guy for her. He had all the qualities that a girl can dream of‚ he’s charismatic‚ handsome‚ and a gentlemen. As their marriage progresses on Janie starts to notice that the man she fell in love with wasn’t that man no more. He started becoming jealous‚ bossy‚ and just sexist towards women. Joe criticizes everything
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order of their reactivity based on displacement reactions‚ reduction of their oxides by hydrogen or carbon‚ the relative ease of decomposition of their compounds and reactions with oxygen‚ dilute acids and water. The higher up a metal is in the reactivity series‚ the more reactive it is. In the experiment conducted‚ the three metals‚ magnesium‚ zinc and copper each had to undergo displacement reactions and reactions with water‚ oxygen and dilute acids‚ to arrange them in the order of their reactivity
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Lab #5: Grignard Reaction – Synthesis of Triphenylmethanol John Kang Chem 152L Performed: 7/20/04 Date submitted: ________________ Lab Partners: Sang Lee‚ Vicky Lai TA: John Stanko Abstract: This experiment explored the synthesis of triphenylmethanol through the use of Grignard reagents. The percent yield of the product was 10% on a relatively humid day. The melting point was calculate to be 127.2oC with a literature value of 162oC. An IR spectrum of the product was taken and used
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Mobile application paper Edward Hansen CIS/207 August 1‚ 2012 Gregory Peterson Mobile application paper The Mobile phone application Mixologist is an application that can be used for aspiring or veteran bartenders to either learn a new drink or find how a drink is made if they are unfamiliar with the drink. Digital Outcrop‚ the company that made the application‚ has made it easier for all types of bartenders to make alcoholic drinks. Digital Outcrop has assembled a large database of mixed
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Abstract The objective of this experiment was to observe multi-step purification of benzoic acid after performing the extraction from a mixture containing benzoic acid‚ cellulose‚ and methyl orange. Recrystallization was done to remove impurities from the sample. The amount of BA recovered during recrystallization is much less than the extracted amount of BA. The difference between the pure and impure samples was observed by comparison of melting points. It was found that impure samples will have
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PRODUCTION OF CITRIC ACID Introduction: Citric acid is a White solid‚C3H4OH(COOH)3‚soluble in water and slightly soluble in organic solvents‚ which melts at 153 oC. Aqueous solutions of citric acid are slightly more acidic than solutions of acetic acid. Traces of citric acid are found in numerous plants and animals‚ because it is a nearly universal intermediate product of metabolism. Large amount of the acid are found in the juice of citrus fruits‚ from which it is precipitated by the
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