Lab Report # 11 By: Andrew Hoitt CHEM 105 Lab 11/29/2012 Lab # 11 – Acid - Base Titration Introduction: The purpose of this lab is to determine the molarity (M) of an unknown HCl solution. A NaOH solution will be made and its molarity calculated. A sample of the NaOH solution will be titrated against the unknown HCl solution to calculated the volume needed to neutralize it. With these volumes the unknown molarity can be calculated. Theory: Solutions
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Adventures in the Unknown Interior of America is a tale of epic proportions worthy of The Odyssey. The only difference being that this tale is true. Written by Álvar Núñez Cabeza de Vaca‚ Adventures in the Unknown Interior of America details the events of Cabeza de Vaca’s eight-year trip from Spain to the New World. It becomes quite clear though his journey that Cabeza de Vaca changes into a completely different man than he was when he set out from Spain in the name of the king‚ and God. Cabeza
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The book‚ “Adventures in the Unknown Interior of America” was translated and edited by Cyclone Covey in 1961. It is a semiofficial report (more like a personal diary) written by Alvar Nuñez Cabeza de Vaca to the King of Spain regarding the Narváez expedition. The original report by Cabeza de Vaca was titled‚ La Relación (1542) along with supplemental material called the Joint Report was used to describe the epic events that happened on the expedition. Cabeza de Vaca was born in 1490 in the town
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TOMB OF THE UNKNOW SOLDIER November 7‚ 2011 1. The Unknown Soldier fought in World War I. The burial place of the unknown soldier was in France‚ near the battle at Vimy Ridge‚ marked by a tombstone that read “Known unto God”. The remains of an unidentified soldier were returned to Canada to the Tomb of the Unknown Soldier‚ a specially designed sarcophagus directly in front of the National War Memorial in Ottawa‚ the National Capital. 2. The remains of soldiers that fought
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Abstract: Protecting biological diversity is defined based on analyzing the cladistic information. In this lab the null hypothesis was examined through interpreting constructed cladograms. A cladogram of five mammalian species include domestic dog (canis familiaris)‚ the Virginia opossum (Didelphis virginiana)‚ the domestic horse (Equus caballus)‚ the domestic cat (Felis cattus) and the white-tailed deer (Odocoileus virginianusis is generated based on the morphological feathers of these mammalian
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Unknown sample number #1 #2 #3 #4 #5 #6 Hypothesis: Coffee Potting soil Raw sugar Baby powder Baking soda Baking powder Color: Brown Gray‚ brown‚ Tan White White White Texture: Course inconsistent Course Soft soft Soft Shape: Small granular pieces Granular particles‚ twig like particles granular-like particles Powder-like Powder-like Powder-like Smell: Of coffee no Of sugar Of baby powder Non No Soluble: Yes no yes yes yes yes Density: 0.307 0
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Cogswell ENG2D- 02 October 15‚ 11 Fear of the Unknown People are quick to judge‚ fear and hate the unknown. Some people may not admit it but everyone is plagued with the tendency to let our imagination take over reality and turn it into the unknown. An excellent example of this is in William Golding’s novel Lord of the Flies. All the boys in Golding’s novel are totally indulged in the theme of fear of the unknown. All of these have some “unknown” element to them; they can’t see in the dark‚ they
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The melting point range is defined as the span of temperature from the point at which the crystals first begin to liquefy to the point at which the entire sample is liquid. This data can be tabulated experimentally through multiple trials for an unknown and referenced against the chemistry literature for a known compound. In Macroscale and Microscale Organic Experiments‚ 5th ed‚ Williamson notes that most pure organic solids will melt repeatedly over a narrow temperature range of 1°C. As a measure
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Determining the unknown concentration of HCl via heat of neutralization of a reaction involving strong electrolytes and weak electrolytes. Myeongwon Lee 20522885 Partner: Frank Wong TA: Afsoon CHEM 120L – Earth Science & Chem 149 Section: 004 Tuesday‚ November 26th‚ 2013 Introduction All chemical changes are accompanied by change in energy and this energy is in form of heat. The energy change of a reaction that happens at constant pressure is defined as heat of reaction or enthalpy change and the
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TITLE : * Analysis of an unknown acetic acid solution OBJECTIVES : * To prepare the sodium hydroxide solution‚ NaOH * To standardise the base against potassium hydrogen phthalate * To analyse the unknown acetic acid RESULTS : A. Preparation of the sodium hydroxide solution Volume of NaOH taken from the stock solution = 3.33 mL B. Standardisation of the base against potassium hydrogen phthalate | 1 | 2 | 3 | Weight KHP | 1.0000 | 1.0004 | 1.0006 | Final volume
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