In this lab‚ we tested the effect of flame on different chemical solutions. In order to do this‚ we used a wooden stick soaked in a metal and nonmetal solution‚ hovered it over a bunsen burner‚ and recorded the color that the flame changed to. The seven solutions we tested were lithium chloride‚ strontium chloride‚ calcium chloride‚ sodium chloride‚ barium chloride‚ copper chloride‚ and potassium chloride. However‚ we had another four additional solutions‚ which had unknown chemical composition
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was no need for distillation. Next‚ a solubility test was given. When one drop of the unknown liquid was added to about 2 mL of water‚ the sample was tested to be soluble due to the dissolubility between the two compounds. By following the chart that was given on the sheet‚ the pH of the solution was tested. Since the two litmus did not changed color‚ the sample was identify to have a low molecular weight and a neutral substance. Based on the solubility test‚ some possible
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Jonathan Nebelsick VO2 Max Tests Conclusion Submaximal VO2 tests are extremely useful for determining estimated VO2 maxes for a subject for a variety of reasons. VO2 max measures the maximum amount of oxygen that can be used by a person undergoing intense physical exertion. VO2 max is considered the best test of cardiovascular fitness and aerobic endurance. If a person can utilize more oxygen‚ then they are able to use that oxygen as a final electron acceptor to make ATP through aerobic metabolism
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TITLE : Tensile Test ABSTRACT The tensile test experiment being done purposely to determine the deformation of our specimen which is low carbon steel or also called as mild steel‚ and it also to identify the fracture characteristic of the specimen based on the result that we got through the experiment. Based on the data presence from this experiment ‚we used it to calculate the stress and strain using a theoretical formula. Through all the calculation that we got‚ we construct a table and
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Purpose: Our purpose here to determine the affects of temperature on potassium nitrate’s solubility in water. Materials Used in the Experiment: Latex gloves Laboratory coat Safety goggles Thermometer Stir rod Test tubes Beaker Weighing dish Hot plate Potassium nitrate Distilled water Description of the Object of the Experiment Potassium Nitrate: The chemical compound potassium nitrate is a naturally occurring mineral source of nitrogen. It is a nitrate with chemical
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Introduction Tensile test is also known as tension test. It is material’s strength test where pulling force is applied from two ends. It is very important mechanical property evaluation test which provides fundamental properties like strength‚ stiffness‚ elastic limit‚ ultimate tensile strength etc. in this test‚ test object are standard size and shape but different material‚ then direct comparison of properties of those materials can be made. We had used standard “dumb-bell” shaped
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solution that contains more dissolved substance than a saturated solution does. This occurs when a solution is prepared at a higher temperature and is then slowly cooled. This is a very unstable situation‚ so any disturbance causes precipitation. Solubility can be understood in terms of two factors: The natural tendency toward disorder favors dissolving. The relative forces between and within species must be considered. Stronger forces within solute species oppose dissolving. Stronger forces
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Result of Observation Chemical name and symbol Physical appearance Cation of the compound Flame color NaNO3Sodium nitrate Colourless crystal Na+ Yellowish Orange NaClSodium chloride Colorless crystal Cl+ Yellowish Orange LiNO3Lithium nitrate Colorless crystal Li+ Red BaNO3Barium nitrate White crystal Ba² Bright yellow‚ lime yellow Sr(NO3) 2Strontium nitrate White crystal Sr² Dark red Cu(NO3)2Cupric nitrate Blue crystal Cu² Green‚ bluish green. Ca(NO3) 2Calcium nitrate White crystal Ca² Redish
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information in Flame Tests‚ Atomic Spectra and Applications Activity) Introduction: Have you ever seen a fireworks display? Where do all of the colors come from? Below are some links to the chemistry of fireworks: http://chemistry.about.com/od/fireworkspyrotechnics/Fireworks_Pyrotechnics.htm http://alchemy.chem.uwm.edu/amalgamator/NCW/ncw2001/fireworks.html In this activity‚ you will investigate the colors of flame produced by solutions of metal salts. A flame test is a procedure
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Introduction: We are conducting this experiment to identify how temperature affects the solubility of salt. To add on‚ by making this experiment we could see how temperature affects the solubility of a substance‚ the maximum number of solute particles that can dissolve in solvent particles. Also‚ how by changing the temperature we could see how if the solubility of the solute would either increase or decrease. This experiment connects with information we learn in class because of how in class
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