containing 6M hydrochloric acid as needed to clean wire · Test tubes containing: Copper sulfate Potassium sulfate Copper nitrate Potassium nitrate Strontium nitrate Calcium nitrate Copper chloride Strontium chloride Calcium chloride Cobalt chloride Sodium chloride Sodium nitrate Sodium sulfate Barium clroride Calcium nitrate · Tirrel burner · Matches · Goggles · Apron Procedure: Work in teams of two At each table there are two samples and two tirrel burners
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positively charged ion)(90%) and is responsible for the osmotic balance of the ECF space by regulating osmotic forces and therefore regulating water balance (interstitial and intravascular fluid volume). Other function include: working with potassium and calcium to maintain neuromuscular irritability for conduction of nerve impulses‚ regulation of acid-base balance (through sodium bicarbonate and sodium phosphate)‚ participation in cellular chemical reactions and membrane transport. * Potassium: K+
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reaction. A precipitate reaction happens when cations and anions of certain aqueous solutions react and combine forming a precipitate‚ which is an insoluble ionic solid. In this precipitate reaction we dissolved both chosen chemicals (powder Calcium Chloride dihydrate and powder Sodium Carbonate) in distilled water and then mixed them together in a single beaker. Finally we filtered this mixture and let all the water evaporate leaving behind solely the precipitate. In order to determine the amounts
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online simulation was used to determine which substances were endothermic or exothermic when dissolved in water. According to the simulation‚ sodium chloride and ammonium chloride was observed to be endothermic. Calcium chloride‚ sodium acetate‚ sodium carbonate‚ and lithium chloride was observed to be exothermic. As sodium chloride and ammonium chloride was observed to be endothermic‚ those two salt substrates was not used in the experiment as the goal of the experiment was to increase temperature
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the sodium atoms absorb the energy and get excited. When electrons come down from the high they release their energy‚ about 200 kilojoules per molecule‚ or the energy of yellow light. The recipe that creates blue includes varying amounts of copper chloride compounds and red comes from strontium and lithium salts. Like paints‚ secondary colors can be made by mixing the ingredients of their primary color relatives. A mixture of copper and strontium makes purple. Pure colors require pure ingredients.
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electrons? +2 3) What is the charge on an ion formed when an atom gains two electrons? -2 The Mole 1) Find the molar mass of zinc 65g/mol 2)Find the molar mass of sulfuric acid H2 SO4 98g/mol 3) How many moles of sodium chloride are present in 117g of Na2 CI 2 moles 4) I have 54g of water (H2O) and 84 g of iron (Fe) do I have more moles of water or of iron I have more miles of water (54 g = 3 moles H20 ‚ 84g = 1.5 moles Fe) Arrangement of Electrons 1)
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calculating the percent yield. Materials: 1 Distilled water 1 Paper towels 1 Small paper cup 1 Coffee cup or mug 1 Beaker‚ 100 mL‚ glass 1 Funnel 1 Cylinder‚ 25 mL 1 Goggles-Safety 1 Scale-Digital-500g 1 Weighing boat‚ Plastic 1 CaCl2·2 H2O-Calcium Chloride‚ Dihydrate - 2.5 g 1 Filter Paper 12.5-cm 1 NaCO3-Sodium Carbonate - 2 g Procedure 1. Put on your goggles. 2. Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL of distilled water and stir to form
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TERMS OF REFERENCE Mr L Neeson of the North Carolina Department of Transport requested this report. The report was needed to provide a progress update and likely outcomes on the investigation into an accident that took place on a bridge over Route 29 highway on 20th May 2000. Although privately owned‚ the bridge crosses a state highway and it is thus the responsibility of the North Carolina Department of Transport to ensure that a proper investigation into the accident is carried out. Mr. Neeson’s
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Observations Substance Added | Temp Before | Temp After | Change in Temp(Celsius) | Observations | Open - Calcium Chloride | 24 | 30 | 6 | translucent ‚ slightly murky | Open - Ammonium Nitrate | 24 | 30 | 6 | translucent‚ slightly murky | Closed - Calcium Chloride | 24 | 18 | 6 | transparent | Closed - Ammonium Nitrate | 24 | 17 | 7 | transparent | Calculations i) Calcium Chloride: Q = (100) (4.184) (6) = 2510.4 Ammonium Nitrate: Q = (100) (4.184) (7) = 2928.8 ii) NH4NO3: (14.0067)
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4) aluminum oxide 5) sodium iodide 6) strontium fluoride 7) lithium sulfide 8) radium chloride 9) calcium oxide 10) aluminum phosphide 11) potassium sulfide 12) lithium bromide 13) strontium phosphide 14) barium chloride 15) sodium bromide 16) magnesium fluoride 17) sodium oxide 18) strontium sulfide 19) boron nitride 20) aluminum nitride 21) cesium oxide 22) rubidium iodide 23) magnesium oxide 24) calcium bromide 25) lithium iodide 26) berylium bromide 27) potassium oxide 28) strontium iodide
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