------------------------------------------------- Rocket A rocket is a missile‚ spacecraft‚ aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets‚ the exhaust is formed entirely from propellants carried within the rocket before use.[1] Rocket engines work by action and reaction. Rocket engines push rockets forwards simply by throwing their exhaust backwards extremely fast. Rockets for military and recreational uses date back to at least 13th century China.[2] Significant
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Summary: Water pollution remains one of the most visible and persistent signs of our impact on the natural world. Cleanup of some older pollutants has been offset by new contaminants that threaten freshwater ecosystems and foul our drinking water. The sight and smell of grossly polluted waterways provided some of the original impetus to the environmental movement in the 1970s. Nearly a century before that‚ the dangers of polluted water to human health drove what became known as the "sanitary
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After WWII‚ the government found itself with a tremendous surplus of ammonium nitrate. Ammonium nitrate is the main ingredient for fertilizer‚ and bombs. This fertilizers that big industrial farms use destroy the fertility of the soil and damage the root system setup by the plants around the area. They can also drain into rivers and wipe
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Cabbage production Cabbage grows best in cool weather‚ but certain cultivars are also adapted for the warmer months. In the cooler areas of the country‚ where frost usually occurs early or late in the season‚ Glory of Enkhuizen‚ Kiaps Spits‚ Green Coronet and Gloria can be planted from January to March‚ and Green Star and Bonanza‚ from August to January. In the warmer areas of the country‚ where little to no frost occurs‚ Glory of Enkhuizen‚ Kiaps Spits‚ Green Coronet and Gloria can be planted
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Name ( ( Class ( ( Title ( Manufactured Substances in Industry ( |Content |Page | |(A) Sulphuric acid | | |Manufacture of sulphuric acid |1 – 3 | |Properties of sulphuric acid
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correct reactants and 2 points for correct products. I. DOUBLE REPLACEMENT Solubility rules that apply to water solution: (1) All alkali metal (lithium‚ sodium‚ potassium‚ rubidium‚ and cesium) compounds are soluble. (2) All acetate‚ ammonium‚ chlorate‚ and nitrate compounds are soluble. (3)
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place two drops of the Cobalt (II) Nitrate in seven of the wells. I then moved to the next row and placed two drops of Copper (II) Nitrate in the next row‚ into seven of the wells‚ and so on with the other three Nitrates. I then cut off the top of the Sodium Phosphate and added two drops to the Cobalt (II) Nitrate and observed the reaction and recorded the results. Then two drops into the Copper (II) Nitrate‚ observed and recorded‚ same with the remaining three Nitrates. I then moved to the second row
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the cation part comes from a base. Example: KCl‚ KOH(aq) + HCl(aq) KCl(aq) + H2O(l) A salt is a compound formed when the hydrogen ion. H+ from an acid is replaced by a metal ion or an ammonium ion‚ NH4+. Salts Nitrate salts Carbonate salts Chloride salts Soluble All nitrate salts Potassium carbonate‚ K2CO3 Ammonium carbonate‚ (NH4)2CO3 Sodium carbonate‚ Na2CO3 All chloride salts Except Sulphate salts All sulphate salts Except 2. Preparation and purification of soluble salts Lead (II) chloride
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A. MATTER * Nature of matter. * Describe the states of matter and explain their conversion in terms of the kinetic particle theory. * Describe and explain diffusion. * Describe dependence of rate of diffusion on molecular mass‚ qualitatively. * Experimental techniques Measurement. * Name appropriate apparatus for the measurement of time‚ temperature‚ mass and volume‚ including burettes‚ pipettes and measuring cylinders. Criteria of purity. * Identify substances
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Lahela Correa 12/08/2009 Microbiology 140 Matthew Tuthill Unknown Lab Report Introduction There are many reasons for knowing the identity of microorganisms. The reasons range from knowing the causative agent of a disease in a patient‚ so as to know how it can be treated‚ to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that I have been learned so far in the microbiology laboratory class for the identification
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