How sodium chloride concentration affects the germination‚ growth and development of Brassica rapa. Osumi‚ K.‚ Nihei‚ B.‚ Takanishi‚ K.‚ Nakamura‚ C.‚ Warehime‚ R. Period 2. 03/05/17 Introduction: To have a successful germination‚ the plant seed needs a sufficient amount of water and oxygen present. Other conditions include room temperature‚ and the amount of light intake. Hydration of a seed‚ is an essential step for seed germination (Martínez-Andújar‚ 2014). Plants tend to germinate better in
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14 2.14 5 Sodium Acetate 1M NaC2H3O2 Weak Base 9.42 9.42 6 Potassium Dihydrogen Phosphate 0.1M KH2PO4 Weak Acid 5.47 5.47 7 Andy Potassium Hydrogen Phosphate 0.05M K2HPO4 Weak Base 7.71 7.73 8 Ammonium Chloride 0.2M NH4Cl Weak Acid 4.65 4.67 9 Sodium Hydroxide 0.1M NaOHStrong Base 11.95 11.95 10 Rachel Sodium hydroxide 0.01M NaOHBase 11.61 11.72 11 Ammonia 0.1M NH3 Base 9.53 9.48 12 Vinegar 0.83M HC2H3O2 Acid 2.83 2.94 13 Petr Sodium 0.5M NaC6H5O7 Weak Base 9.23 9.21 14 Sodium Sulfate 0
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1.23 NaCl 58.44 1 800.7 36 H2O 18.02 1 0.0 1.00 Experimental procedure: Aspirin (1.30 g ‚ 0.00722 mol)‚ Caffeine (0.00666 g‚ 0.000350 mol) and Salicylamide (0.390 g‚ 0.00284 mol) were combined in a 100 mL beaker. To this beaker‚ ethyl acetate (20 mL) and saturated NaHCO3 (10 mL) were added. The organic and aqueous layers were allowed time to separate before the organic layer was removed and put aside. An additional portion of NaHCO3 solution (10 mL) was added and the separation was repeated
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Test #2 Volume CaCl2: 5.0 mL = .005 L Volume NaOH: 4.0 mL = .004 L Moles CaCl2 = (.005 L) * (1.0 mol/L) = .005 moles Moles NaOH = (.004 L) * (2.5 mol/L) = .010 moles Limiting Reactant: NaOH‚ because precipitate was formed when Sodium Hydroxide
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hydrochloric acid it increased 23.7oc and there was steam coming out. 2) Hydrochloric Acid and Sodium Hydroxide: the initial temp was 20oc then when I added Sodium hydroxide it went up to 29℃. But there was no visual reaction. 3) Anhydrous Copper (II) Sulfate and Water: the initial temperature was 21℃ but when we added the water it was 30℃ so it went 9℃ high the visual change was that the water was ocean blue. 4) Sodium Theosulfate And Water: initial temperature is 23℃ when we added the water it was 14℃
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done by him by first narrowing into the reaction which produced bubbles‚ and this included the compounds sodium carbonate and sulfuric acid by looking at Table 2. This correspondence to E and B was determined by the writer by looking at table 3. To figure out which was which‚ the only reaction which produced heat was zeroed into by the writer‚ which involved the compounds sulfuric acid and sodium hydroxide. Heat was formed
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ions. QUESTION If copper (II) sulfate when mixed with sodium carbonate at different quantities combine to form ions in definite ratios. HYPOTHESIS / PREDICTION I believe that the ions will combine in definite ratios due to the fact that the valance electrons will not be changing throughout any chemicals; consequently the ions must combine in definite ratios. EXPERIMENTAL DESIGN A technique is performed in which copper (II) sulfate and sodium carbonate are placed together in various test tubes‚
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CHEM08004: Chemical Analysis and Evaluation 3/26/2014 Mass balance‚ Mixing‚ Absorbance‚ Temperature‚ Weight‚ Product Absorbance‚ Equilibrium‚ Acid‚ Alkali‚ Salt‚ pH‚ Total moles‚ Concentration‚ Potassium Permanganate‚ Ethanoic acid‚ Sodium Hydroxide‚ Sodium Chloride Introduction Mass Balance By the use of mass balances scientists can: Calculate the amounts of raw materials needed for a process‚ estimate the quantity of product that can be made‚ test for errors such as leaks or catalysts
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such as produced on evaporation‚ but rather in the form of ions‚ the basic elements and the acid radicals being separated‚ nevertheless it is customary and convenient to consider them as combined into the form of salts. Among these‚ common salt‚ or sodium chloride‚ makes up the bulk of the material‚ being nearly 78 percent of the total mass of salt‚ or over 27 mille (thousand) of the salinity (which is taken as 35 in round numbers). In the accompanying table the composition of sea water salts is given
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Sodium is a metal from group 1 of the periodic table‚ this is a metal which reacts when it needs to‚ this metal has a low melting and boiling point‚ also it is very dense‚ this shows that when reacting with other substances it will be different and this is because it will not react the same the whole time. The other thing is that this elements electron configuration is 11 which is quite low when comparing them to the other elements in the periodic table. However this metal is more reactive than
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