Biuret will have a violet color. The color caused by the reaction of peptide bonds in the protons or peptides. The presences of free amino acids will not give you the violet color. With the seven test tubes of Different chemicals‚ add ten drops of (koh). The egg albumen is expected to have to violet
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give a gas as a product A. AgNO3(aq) + NaI(aq) B. HCl(aq) + Na2CO3 (aq) C. MgCl2(aq) + K2CO 3 (aq) D. CaSO4 (aq) + (NH4)3 PO4(aq) 1) A) A B) C C) B D) D 2) 2) The balanced molecular equation for complete neutralization of H2 SO4 by KOH in aqueous solution is __________. A) 2H+ (aq) + 2OH- (aq) 2H2O (l) B) H2 SO4 (aq) + 2KOH (aq) C) H2 SO4 (aq) + 2OH- (aq) D) 2H+ (aq) + 2KOH (aq) E) H2 SO4 (aq) + 2KOH (aq) 2H2 O (l) + K2SO4 (s) 2H2 O (l) + SO42- (aq) 2H2O (l) + K2 SO4 (aq)
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heated‚ this was followed by recrystallization to yield the benzil. In step three the benzil from step two was to be synthesized tetraphenylcyclopentadienone. The benzil and 1‚3-diphenylacetone were mixed with ethanol. After heating this‚ ethanoic KOH was added and the solution was left to reflux. The crystals were washed and collected. This ended the multistep synthesis. The final product was not successfully synthesized due to sources of error during procedures. Therefore‚ a percent yield was
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People isolate themselves with boundaries‚ physical and otherwise. With every boundary and border‚ comes every country with its population who like to believe that their country is the best country‚ superior to all others‚ and the same is true of most Americans. Even though the social scene has gotten even more diverse and globalized‚ many Americans have little to no exposure to foreign cultures outside of TV‚ movies‚ and the Internet. However‚ these depictions are often poorly written and stereotypical
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PREPARATION OF POTASH ALUM FROM SCRAP ALUMINIUM Submitted by: Vibhuti Chandna Class XII (VMC) Submitted to: Ms Anuradha Modi Delhi Public School Karnal Certificate This is to certify that Ms VIBHUTI CHANDNA of Class XII (VMC)‚ Delhi Public School Karnal has satisfactorily completed the project on Preparation of Potash Alum from Scrap Aluminium in Chemistry as prescribed by CBSE in the year 2014-2015. Date: Registration No.: Signature of Internal Signature
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1- The reaction HCl + KOH KCl + H2O is a a. synthesis reaction c. neutralization reaction b. ionization reaction d. decomposition reaction 2- What is the value of the self-ionization constant of water? a. 0 c. 1.00 107 b. 1.00 1014 d. 55.4 3- Pure water contains a. water molecules only. b. hydronium ions only. c. hydroxide ions only. d. water molecules‚ hydronium ions‚ and hydroxide ions
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Carbohydrate Polymers 39 (1999) 109–117 Compositional features of polysaccharides from Aloe vera (Aloe barbadensis Miller) plant tissues ´ ´ Antoni Femenia*‚ Emma S. Sanchez‚ Susana Simal‚ Carmen Rossello ´ ´ Enginyeria Quımica‚ Departament de Quımica. Universitat de les Illes Balears‚ Ctra. Valldemossa km 7.5‚ 07071 Palma de Mallorca‚ Illes Balears‚ Spain Received 22 September 1998; received in revised form 27 October 1998; accepted 20 November 1998 Abstract A complete chemical characterisation
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Introduction In this lab‚ caproic acid was synthesized in a multi-step process that involved the synthesis of three intermediates – diethyl n-butylmalonate‚ potassium n-butylmalonate‚ and n-butyl malonic acid respectively. An IR was used to characterize the starting material‚ n-bromobutane‚ and the first intermediate‚ diethyl n-butylmalonate; while IR and NMR were used to characterize the final product‚ caproic acid. Reactions‚ Mechanism and Theory Caproic acid a.k.a n-hexanoic acid is a carboxylic
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assignment. All assignments must be submitted on the stipulated submission date. Please add a “” into appropriate box to indicate your assignment type. Assignment 1/ Assignment 2 Program / Intake : BSc 45 Pathway: Management Student Name: Koh Li Li Student Number: 13212330 Module: Economic Policy and Global Environment Lecturer/Tutor: Rodney Sim Grade: DECLARATION: I hereby declare that the attached assignment is my own work. I understand that if I am suspected of plagiarism or another
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relationship between oxygen consumption and Carbon Dioxide produced‚ therefore the more O2 consumed the more CO2 produced. To keep the amount of CO2 produced from canceling out any pressure gained or lost from the consumption of CO2 we are adding KOH(Potassium Hydroxide) to the respirometers. Since the CO2 will be selectively removed the change in the volume of gas in the respirometer should be directly related to the oxygen consumed. In this experiment the germinating peas‚ in both water baths
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