Vu Ngo % MgO Determination September 10‚ 2012 Procedure: Reference to lab manual Data: Mass of Na2EDTA∙2H2O‚ g | .9289 | Standardization of EDTA Solution | Trial 1 | Trial 2 | Final buret reading‚ EDTA (mL) | 18.5 | 36.7 | Initial buret reading‚ EDTA(mL) | 0.5 | 18.5 | Determination of % MgO of Unknown Unknown Number | 4J | | Sample 1 | Sample 2 | Sample 3 | Mass of sample (g) | 0.2135 | 0.2132 | 0.2139 | Final buret reading‚ EDTA (mL) | 73.5 | 74.2 | 74.2 | Initial
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(v1). Using the density of water (1.0g/mL)‚ this volume can be converted into mass. This concept is shown by the equation [M= (v2-v1) x (1.0g/ml)]. To determine the energy consumed by the melting ice (E)‚ we must determine the energy released by the water to make the ice to melt. This energy can be determined by using the equation to calculate the energy of the temperature changes. The mass of the water releasing heat is determined by multiplying the initial volume (v1) by the density of water (1.0g/mL)
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(2 marks) Q3. Determine the density (in g/cm3) of a solid given;
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Chemistry design: Fuel energy lab Research question: What is the energy density of cyclohexane‚ and how does it compare to the energy density of normal hexane? Variables: Independent variable – The independent variable in this experiment will be the type of fuel that will be used. This will be either Hexane or Cyclohexane. Each type will be given to us and labelled so it will be quite simple to control this variable. This cannot be measured using any apparatus so the lab assistant must be entrusted
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the Gummy Bear Fifth‚ measure the mass of the Gummy Bear using a triple beam balance Sixth‚ calculate the density of the Gummy Bear Seventh‚ add 50 ml of water to the foam cup Eighth‚ Put the Gummy Bear in the water and let it sit for two days Ninth‚ pull Gummy Bear out after two days and repeat steps 1-6 Results Day Bear Color Length Width Thickness Volume Mass Density 1 Red 2 cm 1 cm 1 cm 2.0 2 grams 1.0 2 Light Pink 5 cm 3.5 cm 2 cm 35.0 15.1 grams 4.31 Amount
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Rain water A sprayer works on the principle expounded by A. Newton B. Archimedes C. Boyle D. Pascal Cloudy nights are warmer because A. clouds prevent radiation of heat from the ground into the air B. of low atmospheric pressure C. of the compact density of air D. more dust particles gather in the air A moving body on earth ordinarily comes to rest by itself because of the A. law of inertia B. force of friction C. conservation of momentum D. gravity An isotherm is a line joining places having equal
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and appreciation of their colonial mentality and exerting a conscious effort to discard it. It is only with Filipino nationalism‚ a nationalistic consciousness in his mind and heart will the Filipino be able to fight‚ deal and work with utmost determination for his own betterment and those of his children and grandchildren. Below is an excellent article‚ quite dated but still extremely relevant‚ written in 1984 by Leticia Constantino (wife of the great Filipino nationalist of recent history - the
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Residual solvents Identification and control of the residual solvents (USP 32(467)‚ page 181 Determination by gas chromatography with mass detector and headspace sampler Conditions of the chromatograph Agilent 7890A (LCTG CGMS): * Column DB-624 30m 0.25 mm 1.4µ (CG-2) * Injector temperatura: 160ºC * Flux: 1.0 ml/min * Split: 5:1 * Carrier gas: Helium * Time per test: 30.6 min Conditions of the detector 5975C inert MSD * Data adquisition mode: Scan/SIM * Mass:
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ASSIGNMENT OF SEED PROCESSING ON GRAVITY SEPARATOR AND COLOR SORTER Submitted to Dr. Yadvika Submitted by Aman Dhillon 2009AE05BIV Color Sorter Separation Principle Electronic color sorters separate seed by differences in color. Each seed is viewed and electronically compared with a pre-selected color background‚ and accepted or rejected. The color sorter can also separate off-color mud balls‚ other seed kinds and discolored or other-variety crop seed whose color is different from that
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Calibration of Volumetric Glassware This set of laboratory experiments is designed to introduce you to some of the apparatus and operations you will be using during the remainder of this course‚ including the treatment of data using spreadsheets. While some of the procedures may seem trivial and the results obvious‚ this is a chance for you to develop good laboratory technique. Required Reading D.C. Harris‚ Quantitative Chemical Analysis (8th ed.‚ W. H. Freeman‚ NY‚ 2010) chapter 2 (Tools
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