and a cation flame test and anion test was performed to determine the identity of the compound. Once the identity was determined‚ the properties were explored. Experimental To determine the cation of the compound‚ a cation flame test was performed. A bunsen burner was lit until a medium blue flame was burning. The given unknown was scooped onto a nichrome wire loop. The wire was held in the flame to determine the cation. To compare the unknown’s flame color to a known cation’s flame color‚ a sample
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react with respectively. Flame Color. Next‚ flame tests were conducted with a solution of 0.1 g 643p in l mL distilled H2O and samples of the remaining possible compounds with the same concentration. A wire loop was cleaned and dipped into the solution and held over the hottest part of the flame of a Bunsen burner. This procedure was completed for the each solution‚ cleaning the wire loop between each test to avoid contamination and recording and photographing each flame color and
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equipment. Materials and Equipment: Solid sodium bicarbonate (NaHCO3)‚ solid sodium carbonate (Na2CO3)‚ 6M hydrochloric acid (HCl)‚ electronic balance‚ evaporating dish‚ watch glass (to fit as a cover for the evaporating dish)‚ stand and ring clamp‚ wire gauze‚ dropper pipette‚ small beaker‚ and Bunsen burner. Experimental Procedure: 1. Measure and record the mass of your clean dry evaporating dish + watch glass (assembled together with the watch glass acting as a cover on top of the evaporating
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William Barker Timeline Welding is a method of repairing or creating metal structures by joining the pieces of metals or plastic through various fusion processes. Generally‚ heat is used to weld the materials. The Welding process can utilize open flames‚ electric arc or laser light. Middle Ages The earliest evidence of welding can be traced back to the Bronze Age. The earliest examples of welding are gold boxes from the Bronze Age. The Egyptians also learned the art of welding. Several of their
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ferrous ammonium sulfate and potassium fluoride. The presence of any halogen was tested by a flame test with copper wire and the identification of the exact halogen was done using silver nitrate. Careful experimentation was needed in order to avoid false positive and false negative results. Keywords: elemental analysis‚ oxygen‚ sulfur‚ nitrogen‚ halogens‚ sodium fusion‚ lead acetate‚ sodium nitroprusside‚ flame test[pic] INTRODUCTION Organic compounds are composed mainly of carbon and hydrogen
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times. One moment in Jeannette’s roller coaster of a life‚ the shed they were in caught on fire by her and Brian putting lit matches with different liquids. After her dad had saved them Rex‚ “pointed to the top of the fire‚ where the snapping yellow flames dissolved into an invisible shimmery heat that made the desert beyond seem to waver‚ like a mirage” and said “was known in physics as the boundary between turbulence and order. It’s a place where no rules apply‚ or at least
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explain the results in terms of the energy levels of the metal ions. Lastly‚ to use the flame colours to identify a series of unknowns. Hypothesis: Substance being tested Predicted flame colour NaCl(s) Yellow NaCl Red-Orange NaNO3 Dark Orange LiNO3 Red Sr(NO3)2 Dark Red KNO3 Blue-Indigo Ba(NO3)2 Yellow-Green Cu(NO3)2 Green Ca(NO3)2 Red-Orange Ni(NO3)2 Yellow-Green Materials: Nichrome test wire Bunsen Burner 150 mm test tubes (14) 6.0 mol/L HCl Solid NaCl
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chemically change it to magnesium oxide‚ and then find the measurement of the magnesium oxide. 3. Methods: Obtain a clean‚ dry crucible and a wire triangle. Heat the crucible for approximately five minutes over a Bunsen burner. Make sure to heat the crucible to the hottest part of the Bunsen burner flame (above the tip of the inner blue cone of the flame) to ensure that it glows dull red. After five minutes‚ turn of the burner. Allow the crucible to cool until there is no heat radiating
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FORMAL LAB REPORT INTRODUCTION John Dalton’s atomic theory states that elements combine in simple numerical ratios to form compounds. A compound‚ no matter how it is formed‚ always contains the same elements in the same proportion by weight. The law of mass conservation states that mass can neither be created nor destroyed. In this experiment‚ the mass of the metal was not destroyed or created; the metal’s mass was simply changed into a compound form once the gas
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about “walking on wire.” He didn’t want to think of the consequences he could face while performing such walk. He was a calm person just focused on his dream to walk further and higher‚ to call it history I suppose. His motivation was the rush he received. He puts himself to the test and it was even said that “His favorite moment was running along the wire without a balancing pole- it was the purest bodyflow he could get” (McCann 158). When he finally arrived to walk on the wire and went through
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