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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Weigh out your 1.0g of CaCl2-2H20 and put it into the 100mL beaker‚ Add your 25mL of distilled water and stir to form the calcium chloride solution. Next‚ use stoichiometry to determine how much Na2CO3 and put it into a small paper cup. Then add the 25mL of distilled water to make the sodium carbonate solution. Mix the two solutions in the beaker and a precipitate of calcium carbonate will form instantly. Next set up your filtration assembly. After the filtration assembly is ready‚ swirl the contents
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chalk + limestone (from calcium carbonate) - metamorphic rock has crystals - formed by heat + pressure on sedimentary rock - contains interlocking crystals - eg marble (from limestone or chalk) quarrying limestone - produces local jobs in rural areas + improves economy - quarries can be landscaped after - used 4 making cement (heated w powdered clay) - used 4 making concrete (mix cement + sand + gravel + water) - used 4 making glass (heated w sodium carbonate + sand) - all used to construct
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Olive Green | sodium phosphate | Colorless | sodium sulfate | Colorless | sodium hydroxide | Colorless | sodium chloride | Colorless | sodium carbonate | Colorless | potassium nitrate | Colorless | magnesium nitrate | Colorless | iron (III) nitrate | Yellowish Hue | zinc nitrate | Colorless | copper (II) nitrate | Bluish Hue | calcium nitrate | Colorless | Pre-Lab Questions: A double replacement reaction is a chemical reaction that usually takes place between two aqueous ionic
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‘Kinetics’ is the study of chemical reactions. The speed of a reaction can vary depending on many variables such as the nature of the reactants‚ particle size‚ concentration and temperature. For a chemical reaction to occur‚ there must be a collision between reactants. The reaction rate is slower when the reactants are large and complex molecules because it takes longer for the molecules to combine together creating a chemical reaction. More than 2000 years ago‚ Democritus‚ who was a philosopher
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neutralize stomach acid. They are used to relieve acid indigestion‚ upset stomach‚ sour stomach‚ and heartburn. Antacids are taken by mouth and work by neutralizing excess stomach acid. They contain ingredients such as aluminum hydroxide‚ calcium carbonate‚ magnesium hydroxide‚ and sodium bicarbonate‚ alone or in various combinations. Antacid products may also contain other ingredients such as simethicone‚ which relieves gas. Antacids differ in how quickly they work and how long they
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Amazon river. Pearls chemical composition are mainly calcium carbonate (about 82%-86%)‚ conchiolin and 2-4% of water (CaCO3 and H2O). Pearls are sensitive to heat and chemical materials. The bivalve of oysters are the best source for growing pearls. A good stimulus (usually a sand particle) is necessary for pearls production. The stimulus will place inside the oyster or mollusk‚ and oyster ’s defense mechanism starts secreting a calcium carbonate coating material to coat the irritate. Layer upon
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CHEMICAL COMPOUNDS “Analytical chemistry -I” http://foricseandbeyond.blogspot.in/ metal oxide “Oxides of metals are generally stable to heat and they are considered to be most stable form of compound found in nature.” Oxides of potassium‚sodium‚calcium‚magnesium‚ aluminum ‚ zinc‚iron‚lead and copper are stable to heat uO C PbO Zn O http://foricseandbeyond.blogspot.in/ MERCURIC OXIDE “Mercury(II)oxide” “orange red” 2HgO 2Hg + O2 1.The amorphous powder changes to dark
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dish and Na2CO3 _1.2_g Net mass of the Na2CO3 _0.7__g Step 6: Mass of filter paper _1.0_g Step 10: Mass of filter paper and dry calcium carbonate __1.5_g Net mass of the dry calcium carbonate __0.5__g (This is the actual yield) Step 11: Show the calculation of the theoretical yield of calcium carbonate. 0.00680 moles CaCO3 x 100 g CaCO3 1 mole CaCO3 = 0.68g CaCO3 Show the calculation of the percent yield. Actual yield/Theoretical yield x 100
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Extraction of Aluminium Aluminium ore is called bauxite. Bauxite contains aluminium oxide‚ water‚ iron oxide and other impurities. The purified dry ore‚ called alumina‚ is aluminium oxide (Al2O3). The alumina must be molten for electrolysis to work‚ since the ions are not free to move in the solid state. Unfortunately‚ alumina has a high melting point (2040 °C) and it is not practical to do electrolysis at such a high temperature. In the middle of the nineteenth century it was found that alumina
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