Chemistry 1211K Lab Report Briana Limage Drawer #D20 Tuesday December 2‚ 2014 Lab Day and Time: Tuesday 2-5 Unknown # 4224034-DF14 Introduction The purpose of this semester long experiment was to determine an unknown organic acid. An organic acid is an organic compound with acidic properties. A base reacts with acids to form salts. Titrations are used to determine the concentration of unknown substances. The purpose of the KHP experiment was to determine the molarity of NaOH. HCl
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Intermolecular forces – design lab Research question: To calculate the solubility of equal masses nitrates of four di-positive ions (Lead Nitrate‚ Barium Nitrate‚ Copper Nitrate & Ferrous Nitrate of 0.5 M concentration) in an equal volume of water and relate this to the ionic radius of the element and the molar mass of the nitrate chosen and hence comment on the intermolecular forces in each of these nitrates. + write mass Justification of the research question: I was particularly interested
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Pos t-Lab Data Summary Note : some questions will display a variable like "nCount" or "SyInput" instead of an actual number in the data summary. Q# Question Text 5) Data Entry - No Scoring Enter the precise mass in GRAMS of the potassium iodate used to prepare your primary standard solution. Your mass precision should be reported to a thousandth of a gram‚ i.e. 0.302. (Use 3 significant figures.) Your Answer: 0.536 No Points Possible 6) Scoring Scheme: 3-3-2-1 If one had weighed out precisely
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Safety Precautions and Lab Procedures Bret Niemeyer Abstract—The purpose of this paper is to provide you with safety precautions‚ lab procedures and reference materials to equip you with useful information in the computer electronics and technology fields. The topic is not complete‚ however it should introduce concepts and provide a framework of where to obtain important information for your safety and well-being. shut down of instruments. I. INTRODUCTION HIS DOCUMENT examines safety precautions
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experiment is designed to show the different ways to separate solid mixtures into individual elements. It will also determine whether a substance can be considered “pure” or not‚ as well as determining the solubility of each mixture in water. Procedure: 1) Weigh the amount of the mixture on the digital scale. Separate the Iron out by using a magnet to filter out the Iron element. 2) Take the remaining mixture and add 50ml of distilled water to the remainder and combine in a beaker. 3) Heat
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substances in urine http://en.wikipedia.org/wiki/Paper_chromatography http://www.chemguide.co.uk/analysis/chromatography/paper.html http://chem.wisc.edu/deptfiles/genchem/lab/labdocs/modules/paprchrom/paprchromdesc.htm Purpose The purpose of this experiment is to observe how chromatography can be used to separate
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compounds. The liquid and gas are going to be at equilibrium. We will also determine the boiling point for the known and unknown. Then use a graph to calculate the slope and then use Clasius- Clapeyron equation to find the heat vaporization. Procedure: Refer to pages 155-167 of Chemistry 1210 General Chemistry Laboratory Manual Hayden- McNeil Publishing Inc. 2012-2013 Report Sheet: See attached report sheet and graphs. Sample Calculations: 1/t= 35 C +273 K = 1/308 =0.0325 1/K Ps= Pb
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Sniff Chemicals Don’t Casually Dispose of Chemicals Down the Drain MATERIALS: electronic balance‚ rubber policemen‚ stirring rod‚ beakers‚ watch glasses‚ magnet‚ filter paper‚ funnel‚ weight boats‚ wash bottle‚ sieve‚ mixture sample. PROCEDURE: Separated gravel from the mixture. The masses of weight boat and mixture were determined by using electronic balance. Poured the mixture into the sieve. Held the sieve over a weight boat. The sand and salt past through the holes into
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Purpose: In this experiment I will determine the mass‚ density‚ volume‚ lengths and temperatures of different objects and liquids to help me better understand the importance of Chemistry and how Chemistry plays a big role in our everyday lives. Procedure: In the experiment‚ I use devices such as a ruler‚ beakers‚ flasks‚ a scale and cylinders to measure the values of each object and liquid. DATA TABLE 1: Length Measurements. Object Length (cm) Length (mm) Length (m) CD or DVD 12 cm 120 mm .12 m
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1. The use of microscale techniques does not change the hazardous nature of the reagents we use. Briefly describe the hazards associated with even small amounts of each of the following: a. concentrated hydrochloric acid‚ HCl HCL may be corrosive. It can cause burns to dosy tissue and can be deadly if inhaled or swallowed. b. sodium hydroxide‚ NaOH‚ solution NaOH is a very corrosive chemical and contact with it can cause burns to body tissue and
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