Ferric Chloride TS —Dissolve 9 g of ferric chloride in water to make 100 mL. Thioacetamide TS —Dissolve 4 g of thioacetamide in 100 mL of water. Thioacetamide–Glycerin Base TS —Mix 0.2 mL of thioacetamide TS and 1 mL of glycerin base TS‚ and heat in a boiling water bath for 20 seconds. Use the mixture immediately. Lead Nitrate Stock Solution— Dissolve 159.8 mg of lead nitrate in 100 mL of water to which has been added 1 mL of nitric acid‚ then dilute with water to 1000 mL. Prepare and store
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Observing a Limiting Reactant An experiment was carried out to predict the limiting reactant in a chemical reaction between Magnesium and Hydrochloric acid‚ using the mole concept. Limiting Reactant: It is the reactant that will deplete or will be used up first during a chemical reaction. Limiting reactant also determine how long the reaction will last for. Balanced Equation: Mg + 2HCl = MgCl2 + H2 The balanced equation is needed to determine the mole ratio between the two reactants. From
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light-dependent reactions located in the leaf? 8. What is the function of a photosystem? 9. What is the function of water in the light-dependent reactions? 10. Describe the similarities and differences of Photosystems I & II 11. What are the limiting factors to photosynthesis? 12. Describe adaptations that allow the leaf to retain water. 13. Explain how photorespiration reduces production of glucose. Look at the graphs below. |A |[pic]
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BPK 310 – Assignment 1 UNIT 1 Question 1 (5 marks): Discuss the rate-limiting factor. Why is it important to consider when studying exercise physiology and training? Provide one example to clarify your understanding. The rate-limiting factor is the “step” that limits performances (the “slow step”). If we know the rate-limiting step in a certain physiological pathway or training situation‚ we can manipulate the factors of this step to change and increase the rate of the pathway. This will improve
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Limiting Science Rough Draft #2 David Baltimore’s written work of Limiting Science: A Biologist’s Perspective discusses the controversy of research in molecular biology and its limitless freedom‚ disputing there should be freedom in which direction science heads‚ but the public should decide the pace at which it goes. Baltimore first begins his argument with the discussion of how molecular biology began. It was born from individual sciences where attempts at trying to solve the mysteries in these
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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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NaOH Standardization and Titration of an Unknown Organic Acid Overview: Methods for counting the number of molecules in a sample is a major emphasis of laboratory work. In this experiment we will use the method of titration to count the number of acid molecules in a solution. Measuring mass is a relatively easy procedure to do in the lab (although a balance is expensive). Counting the number of particles requires more effort. Molecular counting can be done by setting an unknown amount of a substance
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ions Reagent/ Condition; Reaction | Explanation | Oxygen supply; Combustion | Limited supply of oxygen: CO formed.Even less Oxygen: C is deposited as soot. Excess Oxygen: Complete combustion (giving CO2 and H2O) | Al2 O3 and vaporisation of alkane at 500°C; Cracking of Alkanes | Al2 O3 is used as a catalyst. Heat provides energy for breakage of C-C bonds. | UV light; Initiation step of FRS of alkanes by halogens * Not required for electrophilic addition reaction btw Halogens and alkenes
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Limit The Use of Technology Over the past several years’ technology has advanced significantly. Nowadays most everything we use is done by some form of technology. Several years ago‚ we didn’t even have cellphones or the Internet‚ now we have cellphones that can access the Internet. This generation has become so dependent with technology that it is actually beginning to harm most us‚ not help us. So this leads us to believe one should limit his or her use of technology because it could cause addiction
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Nour Aboushaar Professor Elizabeth Palamara English Composition 101 14 September 2014 Limiting the Freedom of the press Advertising is a powerful and effective source of information in our everyday life just like TV or internet. Advertisers use ads to encourage people to get products and make products more applicable to them. Respectively‚ advertisers should allow the freedom of the press. Freedom of the press is freedom of communication and the right to publish newspapers‚ magazines‚ and other
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