Determination of the Solubility of Calcium Hydroxide Apparatus * Solid calcium hydroxide * 0.4 mol/dm hydrochloric acid * Distilled water * Pipette * Triple valve rubber pipette filler * Conical flask * Beaker * White tile * Clamp and stand * Methyl orange indicator Producing the calcium hydroxide solution 1. Roughly fill a beaker with 200cm³ of distilled water. This does not need to be accurate because samples will be taken from this. 2. Add solid calcium
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Chemistry Lab Report Design Research question: how to find the absolute uncertainty of a conical flask? Variables: Independent variable: volume of water to be measured Dependent variable: mass of water Controlled variable: temperature wind speed type of chemical solution (water) Apparatus: A 100 mL conical flask A 4 decimal place electronic balance Distilled water A 250 mL beaker A dropper Tissue paper Procedure: 1) The conical
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What Effects Do Temperature And Standard Solution Have on a Beetroots Cell Membrane. Content: * Aim............................................................................................................. * Preliminary Work....................................................................................... * Hypothesis................................................................................................. * Risk Assessment.....................
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Serial Dilution Activity Many applications require the determination of microbial numbers. Those applications can be either clinical or in a research setting. Clinical applications include determination of antibiotic efficacy and as well as therapy. Research applications include determination of the effectiveness of antimicrobial chemicals‚ radiation‚ etc. The viable count is most common or standard method used to quantitate bacteria. With this method only microbes that are alive and able to reproduce
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Experiment One Visible Spectrophotometric Analysis of Cobalt and Nickel Purpose Understand the function of the Spectronic 20 Spectrophotometer‚ the Perkin-Elmer recording UV-visible spectrophotometer and reveal the concentrations of nickel and cobalt in an unknown solution. Procedure In the Lab: Part B: Complex Formation Pipette 20mL aliquots into a 150mL beaker. Do the same with cobalt nitrate and nickel nitrate. Add between 0.70g and 0.90g of EDTA to each of the cobalt nitrate and nickel
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Chemistry Experiment Double Indicator Titration 1 Aim The purpose of this experiment is to find the composition of a sample of sodium carbonate mixture by titration. Introduction The reaction between sodium carbonate and hydrochloric acid occurs in 2 stages‚ with the formation of hydrogen carbonate ion as the intermediate product. Na2CO3(aq) + HCl [pic] NaHCO3(aq) + NaCl(aq) NaHCO3(aq) + HCl(aq) [pic] NaCl(aq) + H2O(l) + CO2(g) [pic] Requirements Hydrochloric
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PAGE 1 Skill A: Using and Organizing Techniques‚ Apparatus and Material Title: Comparison of Soil Porosity Date: March 18‚ 2013 Aim: To prove that Sandy Soil would have the mot water after 24 hours. Apparatus/Materials: Three Conical Flasks‚ Three Filter Funnels‚ Cotton Balls‚ Measuring Cylinder‚ Loam Soil‚ 225ml of Water‚ Paper‚ Pencil Methods/Procedures: Obtain and clean out three conical flasks. Label each flask Sand‚ Loam and Clay. Plug three funnels
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1. Start off by weighing two paracetamol tablets using some accurate scales. Record the mass down (1.15g). This had to be as accurate and precise as we could get it so we had the correct weight to start the experiment. Without this then the results we found at the end would not be accurate. A problem that could be faced with this is that the scales may not have been fully set to zero. Also it takes time for it to fully reach its weight on the reading so you may move them too quick before the right
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Determination of nitrite and phosphate Mech-1103 assignment 2 C.SUNGKUR 10/20/2016 STUDENT ID: 1615715 Faculty of engineering Title: Determination of concentration for unknown solutions of nitrite and phosphate. Author: C. SUNGKUR Student id: 1615715 Date of submission: 20/10/2016 Submitted to: Mr. Y.SEECHURN ABSTRACT When primary aromatic amine and nitrous acid react together‚ it results in a diazonium compound and this process is called diazotization
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Control process Beetroot samples: The same size beetroots will be used throughout the experiment this is to ensure that the impact of the temperature on every sample will stay the same‚ i.e. if having a bigger beetroot sample less pigments will be released into the test tube at lower temperature‚ or having a smaller beetroot sample more pigment will be released into the test tube. This error will change the results of the experiment at large. Therefore it is important to insure the sample sizes
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