05_SSLM_p227_294 8/19/04 11:47 AM Page 271 Name ___________________________ Chapter 23 • Date ___________________ Functional Groups Class __________________ SMALL-SCALE EXPERIMENT VITAMIN C IN TABLETS 38 Small-Scale Experiment for text Section 23.3 OBJECTIVES • Determine the vitamin C content of vitamin C tablets by iodometric titration. • Observe the oxidation of vitamin C in aqueous solution. INTRODUCTION Vitamins regulate biochemical reactions that take
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parallel chemical tests ARMSALCEDO ARMSALCEDO alanx3@yahoo.com EXPERIMENT EXPERIMENT 8 OBJECTIVES CONCEPTS REAGENTS PROCEDURE RESULTS DISCUSSION Reagents OH 8 OBJECTIVES Reagents Chemical Analysis Anhydrous ZnCl2 10% KI 10% K2Cr2O7 6M H2SO4 6M 6M NaOH conc. HCl DNPH reagent Tollen’s reagent 5% aq. NaClO OH CONCEPTS HO 1° alcohol 2° alcohol 3° alcohol REAGENTS PROCEDURE O O RESULTS DISCUSSION H IR ANALYSIS H Ketone IR ANALYSIS Aldehyde
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The Major Problems of Historical Research By Adeyemi Balogun Sharapha In the conduct of historical research‚ the research student faces many problems which include choice of topic‚ funding‚ language barriers‚ source problems to mention but a few. The first problem which a historical researcher might face is that of choosing topic. It is a common phenomenon especially for a young researcher to jump at an attractive topic without knowing the rigors involved in researching
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would be: 21=2 The Experimental Mole Ratio would be: 0.0030.005=0.6 Therefore Since‚ the ratio theoretical mole ratio > the experimental mole ratio 2 > 0.6 KI is the limiting reagent. Part 2: (To determine the Percentage Yield) * Given Information: * 0.003mol ± 0.000015mol of KI is reacted To find the number of moles of Pbl2 that is formed with the given
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background. a. NaHCO3 & HCI- bubbles form b. HCI & BTB c. NH3 (Ammonia) & 1 drop of BTB- record expected color & actual result. d. HCI & blue dye e. Blue dye & NaOCI. Record findings‚ then add 1 drop of HCI f. NaOCI & KI. Observe‚ then add 1 drop of starch. See starch turns black g.KI & Pb(NO3)2. Describe precipitate formed. h.NaOH & phenolphthalein. Observations of Chemical Changes i. HCI & phenolphthalein. With phenolphthalein & acid what color
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reaction was a light blue color‚ then when one drop of HCL was added it first became clear then turned a yellow/orange color. That yellow stayed concentrated at the top segregated. F / A7 NaOCI and KI Automatically turned brown and when the starch was added it turned black. G / A11 KI and Pb(NO3) Automatically turned a cloudy
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“Ka pai ki mua‚ ka pai ki muri” A close viewing Analysis of Turangawaewae-a place to stand a New Zealand short film This is a close-viewing analysis of the short film turangawaewae - A place to stand. Directed by Peter Burger (Ngai Tauiwi). Produced by Catherine Fitzgerald (Ngai Tauiwi). Written by Wiremu Grace (Ngati Toa‚ Ngati Porou). Wi Kuki Kaa (Ngati Porou‚ Ngati Kahungunui) portrays a returned Maori servicemen from Vietnam. Nancy Brunning (Ngati Raukawa‚ Ngai Tuhoe) portrays his daughter
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prayog. You can now recite 5 rounds of the following mantra with coral rosary: “Omm namoh aadesh gury jee kau‚ ro ro joginee‚ ro ro kaali‚ brahma ki beti‚ indra ki saali‚ suka ghat javai taali chousath joginee‚ an gang modee‚ astree purush lagavai tel‚ rai tel kyaa karai khel angineebhijee maya nilgit chousathh yoginee ki aan padayi‚ chohd chohd gauri heeeraun ki vat aavai‚ jauri hamari khat moh mantra chootaa jai to guru gorakh nath ko mans khai phuro mantra ishwaro mantra vacha” You have to recite 4
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Synthesis Procedure 1 -1.0 Introduction A Cobalt-Amine-Halide compound is synthesized from cobalt (II) chloride hexahydrate. An orange-tinted solid is produced and is considered to be unknown since the specific ligand amounts are unknown. By determining the percent composition of various elements and compounds in the unknown‚ its true identity can be predicted. Chloride‚ ammonia‚ and cobalt are three examples of percent compositions determined to help narrow the selection of possible unknowns
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His short stories have a distinct style in Urdu literature. His short stories AAnandi and Overcoat earned him international fame. He became popular without associating himself or depending on any of the literary movement or group. Aanandi‚ JaaDay ki Chaandni and Kan ras are his books of short stories. What fascinated him more than any other thing was human nature and how it responds to stress and emotion. Most of his stories were short on action and plot‚ revealing the inner working and evolution
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