Comment: Treat a Grignard reagent as an alkyl nucleophile i.e. CH3MgBr is equivalent to CH3- nucleophile. The Grignard reagent can also react with RX to form a longer chain alkane. Example: CH3CH2MgBr + CH3CH2Br CH3CH2CH2CH3 + MgBr2 In general‚ basicity parallels nucleophilic strength since both of them depend on the availability of the lone pair of electrons. The Grignard reagent is not only able to function as a nucleophile; it can operate as a base too by reacting with water to
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Sam (name changed to protect confidentiality) is a nine month old boy who was born at 26 weeks and diagnosed with chronic lung disease. He was sent home on 0.3 litres (L) of oxygen per minute with the view of gradually weaning this down as he grew stronger. When I joined the community nurse visiting Sam at home‚ he had been weaned down to 0.1L of oxygen per minute‚ so was now having his time on oxygen weaned down; from continuous oxygen eventually to none. The community nurses follow the trust’s
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Technology is one of the greatest inventions of all time. Screen time is part of almost everyone’s life every day. Many people believe that screen time is a big problem‚ yet that is not entirely true. Excessive screen time is harmful when turned into an addiction‚ yet a little screen time a day can be helpful. Parents believe that the best way to control screen time is to limit it at home. I believe that parents should not limit screen time at home because it can teach kids to be independent
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In the book The Limit the main character’s name is Matt. Matt is a thirteen year old boy that has an interesting perspective on his world and the government. In this book the government controls everything‚ including the amount of transactions made in stores. In the book he was sent off to a workhouse because his family made too many transactions one day at the grocery store. The workhouse is a place where kids go when the family goes over their limit‚ so they go there to pay their family’s debt
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LEARNING TASK NO. 4B Composition Stoichiometry Problems Mole Relationship from Chemical Formulas: a) Determine the number of moles of chloride ions in 2.53 mol ZnCl2. b) Calculate the number of moles of each element in 1.25 mol glucose (C6H12O6). c) How many molecules of oxygen atoms are present in 5.00 mol diphosphorus pentoxide? d) Calculate the number of moles of hydrogen atoms in 11.5 mol water. e) A sample of ethanol (C2H5OH) has a mass of 45.6 g.How many carbon atoms does the sample
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Stoichiometry Section 11.1 What is stoichiometry? In your textbook‚ read about stoichiometry and the balanced equation. For each statement below‚ write true or false. _______true___________ 1. The study of the quantitative relationships between the amounts of reactants used and the amounts of products formed by a chemical reaction is called stoichiometry. ________true__________ 2. Stoichiometry is based on the law of conservation of mass. _________false_________ 3. In any chemical reaction‚ the
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|107.87 |187.57 | Next‚ we used stoichiometry to calculate the necessary mass of reactants to produce about 2 grams of silver: [pic] [pic] The limiting reactant is the reactant in a chemical reaction that limits the amount of the product that can be formed. The reaction will not continue after all of the limiting reactant is consumed. The limiting reactant in our reaction is Cu because we want the entire amount of the element to bond
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Stoichiometry 04/09/12 Chemistry I B Ms. Norton Introduction/Pre-laboratory Assignment: 1. Write out and balance each of the following equations. A. CuSO4 + Fe Cu + FeSO4 B. 3CuSO4 + 2Fe 3Cu + Fe(SO4)3 2. If Iron (III) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent? C. 2.26 g Cu D. Fe 3. If Iron (II) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent?
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Stoichiometry II- Synthesis of a Coordination Compound Report 〖CuSO〗_4 (s)→〖Cu〗^(2+) (aq)+ SO_4 (aq)^(2-) Cu^(2+) (aq)+ 4NH_3 (aq)→[Cu(NH_3 )_4 ]^(2+) [Cu(NH_3 )_4 ]^(2+)+ SO_4 (aq)^(2-)+H_2 O□(→┴(methanol solvent) ) [Cu(NH_3 )_4 ]SO_4*H_2 O 1.992 g 〖CuSO〗_4 (s) × (1 mol〖 CuSO〗_4 )/(159.6 g) = .0124 mol 〖CuSO〗_4 (s) .0124 mol 〖CuSO〗_4 (s)×(1 mol [Cu(NH_3 )_4 ]SO_4*H_2 O )/(1 mol〖 CuSO〗_4 )×(245.74 g [Cu(NH_3 )_4 ]SO_4*H_2 O )/(1 mol [Cu(NH_3 )_4 ]SO_4*H_2 O )=3.047 g [Cu(NH_3 )_4 ]SO_4*H_2
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I am writing to you concerning the recent legislation regarding allowing illegal immigrants to be given amnesty and allowed to apply for work permits and‚ after two years‚ being granted citizenship. This troubles me greatly‚ especially with our unemployment rate being as high as it currently is. This would make it much more difficult for those searching for employment as there would be much more competition. Secondly‚ if an illegal immigrant is allowed to become a U.S. citizen that easily‚ this
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