managed(xoay xở) to survive(tồn tai‚ sống sót) at all because they found ways of scraping(đập vụn a living at night Only after the mysterious(kì lạ‚ huyền bí) mass extinction(sự tuyệt chủng) of the dinosaurs about 65 million years ago were our ancestors able to emerge(nổi lên) into the day light in any substantial(đáng kể) numbers. B. Bats have an engineering(kĩ thuật) problem: how to find their way and find their prey in the absence of(thiếu vắn) light . Bats are not the only(duy nhất) creatures to
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Aşağıda yazılanların hepsi sınavda soruldukları şekilde yazılmamış olabilir. Şöyle ki‚ bazıları sadece konu başlığı olarak yazılmış olabilir buraya ve bu da demek oluyor ki‚ o konu ile ilgili bir soru sorulmuş. Tabii sadece bunlara çalışıp sınava gitmiyoruz‚ kaldı ki gireceğiniz sınavda illa ki bunlar çıkacak diye bir şey de yok Demet hoca‚ 3.sınıf‚ 1.dönem vize: 1 Information transfer activities in listening 2 learner difficulties in listening activities 3 reading purposes‚ discuss two
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Classification for Functional Groups Alcohols Lucas test (Differentiates primary‚ secondary‚ and tertiary alcohols) Reagent: ZnCl2 in conc. HCl Observation: Rate of reaction (tertiary alcohol> secondary alcohol> primary alcohol) Procedure: 2mL Lucas Reagent in test tube+ 3-4 drops of alcohol‚ stopper‚ shake vigorously‚ NOTE time required (less than 10m mins only) to form an emulsion or separate layers. Oxidation (Confirms if alcohol is oxidizable: presence of H in C-OH bond) Reagent:
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Project Report - Determination of the Dosage of Bleaching Powder Required for Sterilization of Different Samples of Water CONTENTS 1. INTRODUCTION 2. GENERAL METHODS USED 3. THEORY 4. REQUIREMENTS 5. PROCEDURE 6. OBSERVATION TABLES 7. CALCULATIONS 8. RESULT 9. CONCLUSION INTRODUCTION Water is the major constituent of all living beings. Water necessary to sustain all types of life. The water used for drinking purpose by human beings should full the following
Free Titration Iodine Chlorine
MAPA- Mumbai Academy of Performing Arts ! Show name – Fusion Nach 20 14. TIMING- 11.30- 1.30 (by 2) aprrox timing before break 30 mins. BREAK can be arround 10-15 mins. approx timing after break 45 mins. Hum jante hai aap hai bekaraar ‚ Par sirf kuch paloan ka intezaar ‚ Aur phir shuru hoga yeh show ekdam Dhamaaakedaaarrrr!!!!…. Hum Hai KHUSSHBU –KHUSSHBU AWATRAMANI Rakhenge aapka kahayal‚ Aayiye dekhe hum sab ajj ke performances bemisaal!!!! A very good morning
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INTRODUCTION Enzyme is a biological catalyst that acts on a molecule called substrate and it also significantly speed up a chemical reaction by lowering the activation energy. In order to learn about the enzyme and its behaviour‚ this lab practical is conducted to examine the kinetic of the enzyme alkaline phosphatase. As illustration‚ when alkaline phosphatase is added to a substrate called p-Nitrophenyl phosphate (colourless in alkaline solution)‚ a series of reaction takes place and eventually
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(317.2) (39.1) +(14) + (16x3) (207.2)+(126.9x2) =166g/mol 331.2g/mol 69.4g/mol 461.0g/mol #n (EQUN) 2 mol 1 mol 2mol 1mol M of PbI2 w KI = 1.25g KI X 1mol KI X 1 mol PbI2 X 461.0g PbI2 = 1.735 g of PbI2 LR 166.0g KI 2 mol KI 1 mol PbI2 M of PbI2 W Pb(NO3)2 = 1.25 g Pb(NO3)2 X 1 mol Pb(NO3)2 X 1 mol PbI 2 X 461.0 g PbI2 331.2 g Pb(NO3) 2 1 mol Pb(NO3)2 1 mol PbI2 =1.739 g od PbI2
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FE 106 GENERAL CHEMISTRY EXPERIMENT-3 CHEMICAL KINETICS PREPARED BY BURAK COBAN PURPOSE: In this experiment we will study the rate of decomposition of hydrogen peroxide to form oxygen according to the net equation: 2H2O2 (aq) 2H2O(l) + O2 by measuring the rate at which oxygen evolved‚ we will investigate how the rate changes with varying initial concentrations of hydrogen peroxide and iodide
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My sMs tReAsuRe Acknowledgement This book is a combined efforts of a lot of people & also things. First & foremost I would like to thank my dearest parents‚ & then my friends (because all the sMs here are forwarded by them only‚ so I think they should be thanked first !) & then there are some of my relatives too who have sent me messages & then if I continue I would certainly won’t have enough money to publish rest of my book. Also secondly I would thank my whole skeleton that
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Measure the potassium iodide. Weigh out approximately 2 g of solid KI. This amount is a large excess over that which is needed. 3. Oxidize the iodide ion with hypochlorite ion. Using a graduated cylinder‚ transfer 25 mL of the dilute bleach into an Erlenmeyer flask. Add the KI and about 25 mL of distilled water. Swirl to dissolve the KI. Working in a fume hood and slowly with swirling‚ add approximately 2 mL of 3 M HCl. The solution should be a dark
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