Objective: To understand the importance of choosing suitable indicators for detecting the end points of acid-base titrations. To obtain titration curves some acid-base titrations. Materials and method: As shown in page 2 and 3 in General Chemistry practical manual 2011. Result: Part 1: Suitability of Indicators Strong acid-weak base titration Table I: Volume Titration Rough Accurate 1 Accurate 2 Final volume 0.00 14.65 0.00 Initial volume 35.20 48.00 33.50 Volume of
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an impact on biological thinking as the discovery of base-pairing in nucleic acids. These complementariness principles do not only underlie current ideas on the structure of the nucleic acids‚ but they form the foundation of all speculations‚ more or less well- founded‚ on their physical properties (denaturation‚ hypochromic- ity‚ etc.)‚ on the transfer of biological information from deoxy- ribonucleic acid to ribonucleic acid‚ and on the role of the latter in directing the synthesis
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Base Details Siegfried Sassoon’s epic war poem "Base Details" focuses on a soldier’s bitterness toward the fact that old men wage war while young men fight it. Sassoon uses various literary devices to express his anger toward such injustice. The main ones being rhyme‚ strong connotative words and especially diction. The speaker‚ a soldier in World War I‚ contemplates what it would be like to be an officer in during war. By using a sarcastic and cynical tone‚ he is effectively able to condemn war
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in acid-base titrations Objectives 1. To understand the importance of choosing suitable indicators for detecting the end points of acid-base titrations. 2. To obtain titration curves for some acid-base titrations. Introduction Indicator is usually a weak organic acid or base that has distinctly different colours in its protonated and deprotonated forms. There are 4 types of acid-base titrations such as strong acid-weak base titration‚ weak acid-strong base titration‚ strong acid-strong
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MATERIAL BALANCE GIVEN: TO DESIGN A 1000TPD CAPACITY H2SO4 ACID PLANT BASIS: 1 HOUR OF OPERATION. PURITY: PRODUCT WHICH IS TO BE MANUFACTURED IS ASSUMED TO HAVE STRENGTH OF 98% ACID. 1000TPD implies that we have Acid 1000 x 10 / 24 = 41666.67 Kg/Hr of 3 With 98% purity‚ the acid that is produced per hour = (98 x 41666.67) / 100 = 40833.34 Kg/Hr Kmoles of Sulfuric acid to be produced = 40833.34 / 98 = 416.667 Kmoles/Hr It’s assumed that overall absorption of the acid is 100 % = 416.667 / 1
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Acid Strength Grade 10- Science (chemistry) 11/23/2012 Mariana Boff Acids Strength Acids are substances that contain hydrogen atoms which detach to form hydrogen ions when the acid is dissolved. Acids are divided into two main categories: the strong and weak acids. The stronger ones are very corrosive and can cause severe skin burns‚ here are some examples: nitric acid (HNO3)‚ hydrochloric acid (HCl) and sulfuric acid (H2SO4). The weaker ones are less corrosive and when in touch with the
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Separation of Amino Acids by Paper Chromatography Chromatography is a common technique for separating chemical substances. The prefix “chroma‚” which suggests “color‚” comes from the fact that some of the earliest applications of chromatography were to separate components of the green pigment‚ chlorophyll. You may have already used this method to separate the colored components in ink. In this experiment you will use chromatography to separate and identify amino acids‚ the building blocks of proteins
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and pyrimidine bases project inwards at 900 to the axis of the helix. 3. The two strands are held together by hydrogen bonding between pairs of bases such that guanine always pairs with cytosine and adenine always pairs with thymine; this is called complementary base pairing 3. The diameter of the helix is 2.0 nm and adjacent bases are separated by 0.34 nm and inclined at 360 relative to each other. This means that each complete turn of the double helix contains about 10 base pairs. 4. The
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MANUFACTURE OF ACRYLIC ACID BY PARTIAL OXIDATION OF PROPYLENE Submitted by‚ P.V.R.Krishna Prasad. M.Prem Kumar. ACKNOWLEDGEMENT We hereby place our sincere thanks to Dr.R.KARTHIKEYAN‚ Head of the Department of Chemical Engineering ‚ Faculty of Engineering and Technology‚ S.R.M University and the faculty members of Chemical Engineering Department for their full hearted co-operation and encouragement for the completion of this project. We extend our thanks to our Project guide Mr
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Nucleic Acids: How Structure Conveys Information Paul D. Adams • University of Arkansas Nucleic Acids • Nucleic acid: a biopolymer containing three types of monomer units • a base derived from purine or pyrimidine (nucleobases) • a monosaccharide‚ either D-ribose or 2-deoxy-D-ribose • phosphoric acid • RNA (Ribonucleic Acid) • DNA (Deoxyribonucleic Acid) Nucleic Acids • Levels of structure • 1°structure: the order of bases on the polynucleotide sequence; the order of bases specifies
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