| | | |4. Wax can come from animals‚ vegetables‚ or minerals. | | | |5. Candle wicks are treated with flame-retardant solutions. | | | |6. Paraffin wax must be in the vapor state to travel up the wick. | | | |7. Paraffin wax may
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Analytical techniques Introduction * The analysis technique chosen is gas chromatography‚ I’m going to talk about it and I am elected chromatography studies to identify and quantify known materials do. * The principles of gas chromatography * The functions of gas chromatography * Theories of instruments and techniques etc. PRINCIPLES Gas chromatography (GC) was first demonstrated for analysis of liquid in the classic paper by james and martin (1952). It was quickly recognised
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g. Does the distance from the flame affect the time taken for the wax to melt when you heat the metal rod? HYPOTHESIS: (say WHAT you THINK WILL HAPPEN and explain WHY you think this) VARIABLES (these are the things which can change the results of your experiment) INDEPENDENT this variable is the ONE YOU CHANGE a little every time you repeat part of your experiment; e.g. first you time it 5cms from the flame‚ then 10 cms‚ then 15cm…so DISTANCE FROM THE FLAME is your INDEPENDENT VARIABLE)
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remember‚ as a small girl‚ watching my mother run across the street‚ into a white framed house‚ that was bursting with flames. My mother‚ a very small woman‚ ran through a doorway of flames and pulled Mr. Miller‚ our elderly neighbor‚ to safety from his burning house. He lived alone and was trying to prepare his dinner‚ when some how he lost consciousness and a grease fire ignited the flames‚ resulting in the total destruction of his home. Mental
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What is the difference between the following?: What kids tell each other in person. What kids tell someone else about someone What kids post online or text. When a kid assaults a kid face to face with violent words or flames there’s a good chance the kid would get punched which is why some people are scared to criticize others or make hateful comments to others face to face.When a kid tells someone about someone else it’s anonymous the person who is being talked about has no idea their
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reactors‚ diffusion flames‚ and laminar premixed flames experiments by several researchers [2-5]. Detailed chemical kinetics models to describe the gas-phase oxidation of ethanol in air are available in literature [6]. Apart from that a global single step mechanism for ethanol oxidation is also available [7]. Experimental studies have been reported on extinction and autoignition of methanol and ethanol flames in laminar‚ non uniform flows for both non premixed and premixed flames in counter-flow configuration
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slowly consumed by the flames. Hitler declared all Jews to be put into concentration camp. Jews ran and hid under beds‚ walls‚ floors etc.‚ but it did not work because they were eventually killed. That ones that willing went outside were put in lines. Boys and girls are put in different lines and this is when his mother and sister were taken. Eliezer looked around and saw dead bodies everywhere and realized he would never see them again. His is just the begging of the flame. All the men have
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Distillation of Alcoholic Beverages Pamela Mallari*‚ Symon Manuel‚ Katherine Merene and Charlene Mondelo Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Distillation is a physical process used to separate chemicals from a mixture by the difference in how easily they vaporize. This experiment aims to (1) compare the efficiency of simple and fractional distillation‚ (2) distill and calculate the % of ethanol and (3) determine the % loss in distillation. Two
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SEMI – MICRO QUALITATIVE ANALYSIS OF SIMPLE INORGANIC SALT _______________________________________________________________ CATIONS: Pb2+ ‚Hg2+ ‚Cu2+ ‚Cd2+ ‚ Ag+ ‚ Fe2+ ‚ Fe3+ ‚ Al3+ ‚ Zn2+ ‚ Mn2+ ‚ Co2+ ‚ Sr2+ ‚ Ba2+ ‚ Mg2+ ‚ NH4+ ANIONS: CO32- ‚ S2- ‚ SO32- ‚ SO42- ‚ NO2- ‚ NO3- ‚ Cl- ‚ Br2- ‚ PO43- ‚ CH3COO- _______________________________________________________________ PRELIMINARY TESTS 1. Note the state (amorphous or crystalline) and colour of salt. 2. Test the solubility of the salt in
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aside the rubble and escape. With little thought to his own safety‚ Smith pushed aside the rubble with superhuman effort. Pulling the grandmother from the fire‚ he rushed back into the burning building to look for the girls. Twice he returned to the flames‚ and each time he emerged from the smoke with another little girl in his arms. Safe outside of the home‚ Smith was finally able to collapse. The smoke inhaled in the fire was making it difficult to breath‚ and he struggled to cough. Next to him
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