Determining the Unknown Concentration of NaHCO3 (aq) Through Titration Introduction Titration is the accurate addition of a titrant- solution in a burette- into a measured volume of a sample (Kessel‚ 2003). There are many different types of titration‚ such as acid-base reaction‚ redox reactions‚ precipitation reaction and more (Dohrman). In this lab an acid base titration will be explored. In an acid-base titration‚ the concentration of an acid or base is unknown and is determined by the adding
Premium Chemistry PH indicator Sodium hydroxide
The 13C NMR spectrum was useful to help finding the structure of the unknown. It showed six different signals in the spectrum. Signal 1 had an observed peak value of 19.242 ppm‚ and its peak calculated value was 19.1 ppm. This signal was first to most upfield and shielded in the spectrum because of the high electron density of carbon. This signal was agreed to a literature value for a CH3 group between 5-30 ppm. Signal 2 was branched to signal 1‚ and had the same value‚ but it was agreed for the
Premium Spectroscopy Atom Nuclear magnetic resonance
Case Study Report for Unknown #49 A new school for girls was opened in a larger village in Northern Pakistan‚ and the teachers were proud to have convinced many families in the surrounding villages to allow their daughters a basic education. The school was a success‚ and the 6-10 year olds girls quickly learned how to read and write and were even instructed in the sciences. However‚ 2 weeks before summer break‚ many of the girls and the teacher developed breathing problems that included severe coughing
Premium Microbiology Bordetella pertussis Gram staining
Sally Jessica Smithers: The Case Of The Unknown Assassin Sally Jessica Smithers was a slender‚ beautiful‚ smart‚ and talented cop. She was investigating eleven serial killings of important men when she got a call‚ there was another murder. When she went‚ she took no time at all at the scene. As Sally left the crime scene in the park‚ with one hand in her long dark brown hair‚ she called out to a few units to make three immediate traffic stops and went to the last one to read off people’s IDs. When
Premium Murder Crime Police
Scheme of Analysis for Lab 2 Unknown Sample Description Phase‚ color‚ odor‚ crystalline or gel-like? If crystalline‚ what is crystal shape – needle-like or powdery? Does it look like a pure substance or a mixture? How many components appear to be present? Tests on original sample Flame Test Bushy yellow‚ orange flame – Na+ is present and possibly K+ and NH4+. Pink-purple flame – K+ is present and Na+ is not. (Possibly NH4+) No color or faint trace Na+ - NH4+ is possible‚ K+ and Na+ are
Premium PH indicator Solubility Acid
Research in Biotechnology‚ 3(6): 51-58‚ 2012 ISSN: 2229-791X www.researchinbiotechnology.com Regular Article Isolation and identification of a new Bacillus strain for amylase production Yasser Bakri*1‚ Hassan Ammouneh1‚ Samir El-Khouri1‚ Muhanad Harba1 and Philippe Thonart2 1Department of Molecular Biology and Biotechnology‚ AECS‚ Damascus‚ Syria‚ P.O.Box 6091 Wallon de Biologie Industrielle‚ Unité de Bio-industrie‚ Faculté de AgroBiotechnologie de Gembloux‚ Université de Liège
Premium Enzyme PH Bacillus
Identification and Recreation of Unknown White Compound #643p November 13‚ 2012 INTRODUCTION: The identity of the unknown solid white compound is determined and verified through a series of tests which uncover physical and chemical properties necessary for identification. A new sample of the same compound is then created to further prove the accuracy of the identification. The compound must be identified in order to be used. For example‚ KCl is used in medicine‚ scientific applications‚ and
Premium Chemistry Chemical substance Chemical compound
The Unknown Struggles of Homeless Children Tammy R. Mathews Liberty University Abstract This research assessed the struggles of homeless children. The study compared the educational struggles of a random sampling of children living in stable environments to children who are considered “homeless.” Homeless refers to any child or youth who lack a fixed‚ regular‚ and adequate nighttime residence. The study revealed the number of homeless
Premium Homelessness Poverty Education
Antibacterial Properties of Derris elliptica Benth. (Opay) Against Staphylococcus aureus and Escherichia coli A Special Problem Outline Presented to The Faculty of the Department of Biological Sciences College of Arts and Sciences Central Luzon State University In Partial Fulfillment of the Course Requirement in Animal Physiology (Bio255) For the Degree of Bachelor of Science in Biology October 2013 CHAPTER I INTRODUCTION Background of the study Derris eliptica (Wallich) Benth belongs
Premium Escherichia coli Staphylococcus aureus Bacteria
An Autobiography of an Unknown Indian by Nirad C. Chaudhuri. In this book the author has depicted his “Early Environment” in book -1 which he talks about his “ My birth place”‚ “ My Ancestral village” where he has pass his old days‚ “ My Mother place” where he had lived for sometimes and also describe about “England” as he was very fascinated of it. So as the same he talks about his “parents and early 12 days” and something about “Nationalism” in book -2.In book -3 he talks about “Calcutta” how
Premium Bengal Town