carbonate. c. Calcium metal reacts with water to form calcium hydroxide and hydrogen gas. d. Potassium nitrate decomposes to form potassium nitrite and oxygen. e. Barium metal reacts with Iron (III) sulfate to produce barium sulfate and iron metal. f. Barium chloride reacts with sodium sulfate to produce barium sulfate and sodium chloride. g. Bismuth (III) oxide and zinc metal react to produce zinc (II) oxide and bismuth metal. h. Calcium metal reacts with phosphorus to produce calcium phosphide
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are of an element before it. The coefficient in a chemical formula indicates how many molecules of the formula unit‚ or chemical compound. The chemical formulas we use in this experiment are NaCl (sodium chloride/salt)‚ KCl (potassium chloride)‚ and CsCl (cesium chloride) and CaCl2 (calcium chloride). To form
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are found on page 162 in the textbook Sciencepower 9 Part 7: Test tube; Test tube rack; Dilute hydrochloric acid; Magnesium ribbon Part 8: 3 Test tubes; Test tube rack; 2 Spatulas; 2 Stoppers; De-ionized water; ………………Ammonium chloride; Calcium Chloride Procedure: Part 1: i) Observe and record the physical properties of each starting substance …………………..before mixing the substances together. …………… ii) Pour 2-3mL of potassium iodide solution into a clean dry test tube. ………………iii)
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antiperspirant 6 Ammonium bromide NH4Br Used in photography 7 Ammonium chloride NH4CI Used in photography 8 Ammonium carbonate (NH4)2CO3 Smelling salts 9 Calcium carbonate CaCO3 Limestone/chalk 10 Sodium chloride NaCI Table salt 11 Calcium chloride CacI2 De-icer for snow on roads 12 Calcium hypochlorite Ca(ClO)2 Swimming pool disinfectant 13 Ammonium Nitrate NH4NO3 Used in fertilizer 14 Ammonium phosphate (NH4)3PO4 Used in fertilizer 15 Calcium oxide CaO Used to make plaster 16 Carbon dioxide CO2 Dry ice
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hydrolyze the enzyme Urease efficiently to produce microbial concrete. Such bacterial are known to produce calcium which is useful in giving strength to cement. We are working in 2 stages. Stage 1: Here we check the effect of bacterial solution on cement mortar and along with that we check the effectiveness of the bacterial solution to fill the cracks in concrete by precipitation of calcium in the cracks. Stage 2: To prepare concrete using the cement and solution (bacterial) in optimum ratio
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Patients must meet the following criteria prior to initiation of the Potassium‚ Magnesium‚ or Phosphorus protocols: o SCr < 2 mg/dL o Weight > 40 kg • The electrolyte replacement protocols‚ Calcium chloride (Level I areas only) or Calcium gluconate (all levels of care)‚ Magnesium sulfate‚ Potassium chloride‚ or Potassium Phosphate‚ may be ordered individually or in combination. POTASSIUM REPLACEMENT PROTOCOL – INTRAVENOUS • Recommended rate of infusion is 10 mEq/h • Maximum rate of intravenous
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soluble in water e.g. * sodium nitrate * ammonium nitrate * copper (II) nitrate * lead (II) nitrate * zinc nitrate * potassium nitrate All POTASSIUM‚ SODIUM and AMMONIUM compounds are soluble in water e.g. * ammonium chloride * sodium sulphate * potassium carbonate * sodium hydroxide * potassium oxide Table I showing rules for solubility in water SALTS | SOLUBLE
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1:1 (2) 1:2 (3) 1:3 (4) 1:6 19. What is the total number of atoms in (NH4)2SO4? (1) 10 (2) 11 (3) 14 (4) 15 22. Write the correct formula for the following binary ionic compounds. (a) Lithium fluoride LiF (b) Calcium oxide CaO (c) Aluminum nitride AlN (d) Beryllium chloride BeCl2 (e) Potassium iodide KI (f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary molecular compounds. (a) Carbon monoxide CO (b) Boron tribromide BBr3 (c) Sulfur hexafluoride
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formula | NH3 | 6 | Nitric acid formula | HNO3 | 7 | Phosphoric acid formula | H3PO4 | 8 | Sodium phosphate formula | Na3PO4 | 9 | Calcium carbonate formula | CaCO3 | 10 | Ammonium sulfate formula | (NH4)2SO4 | 11 | Carbonic acid formula | H2CO3 | 12 | Sodium bicarbonate formula | NaHCO3 | 13 | Sodium hydroxide formula | NaOH | 14 | Calcium hydroxide formula | Ca(OH)2 | 15 | Ethanol formula | C2H5OH | 16 | Hydrobromic acid formula | HBr | 17 | Hydrosulfuric acid formula |
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that are present in multiple samples of water by adding another chemical to create a reaction to percipitate the calcium out of the water into a measureable solid Materials: balance (.001g)‚ 100ml beakers‚ graduated cylinder‚ drying oven‚ Na2CO3 (sodium carbonate)‚ stir rod‚ scoopula‚ DI water‚ watch glasses‚ filter paper‚ ring stand‚ funnel‚ water samples with CaCl2 (calcium chloride) Procedure: 1. Measure out a 20ml sample of each A‚ B‚ and C hard waters 2. Place samples in separate beakers
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