to positive metal ions because it loses electrons. But nitrate ions are also easily reduced to products like nitrogen monoxide and nitrogen dioxide. So metals reacting with nitric acid tend to give oxides of nitrogen rather than hydrogen. If the acid is relatively dilute‚ you tend to get nitrogen monoxide‚ although this immediately reacts with oxygen in the air to make brown nitrogen dioxide. Concentrated nitric acid gives
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studied in five chickpea (Cicer arietinum L.) cultivars from Spain and Syria. Plants‚ in symbiosis with Mesorhizobium ciceri ch-191 strain‚ were grown under controlled conditions for 32 days and subjected to salinity stress. Parameters of growth and nitrogen fixation were affected under salt stress in all cultivars tested; plant dry weight decreased by about 15% in ILC1919; and in Sirio and Lechoso about 50% with the highest salt dosage (100 mM NaCl). ILC1919 showed a less growth accompanied by a lower
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this process‚ he converted nitrogen of the air into potassium nitrate. Then‚ he removed the oxygen excess‚ but there still remained a small amount of gas‚ no larger than 1/120 of the original volume of air. He considered that this difference had been caused by experimental errors. About 100 years later‚ Lord Rayleigh and Sir William Ramsey discover Argon in 1894. For Ramsey‚ it is was as early as 1885-1890 when he published several notable papers on the oxides of nitrogen and followed those up with
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The physics behind SCUBA diving and the physical effects on the body. Scuba diving is a sport that many people enjoy but hardly understand the physics behind. The journey from the pressure of the atmosphere to the deeper depths of the seas is not just a trip that involves breathing air out of a tank and looking at fish. If we were to go on an imaginary journey beginning at the surface and traveling to the bottom of a 300 foot lake your body would under go a change in pressure nearly of 10 times
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oceans. This makes a unhealthy water enviroment for the fish damaging the water and can harm and or kill the fish. The fish are usually used as a food source for families and they are now not a healthy source of food. When it comes to nitrogen‚ humans again have a large impact. Human are crop
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fertilizers mainly nitrogen (N)‚ phosphate (P)‚ and potassium (K) - often referred as ‘potash’ in a salt form. (“What are fertilisers‚” 2010). They are equally rich in these nutrients and convenient to obtain from nurseries. As for the secondary nutrients present in these chemical fertilizers‚ it contains sulphur (S)‚ magnesium (Mg)‚ calcium (Ca)‚ and sodium (Na) and metals (micronutrients) such as copper (Cu)‚ ferum (Fe)‚ boron (B)‚ zinc (Zn) and manganese (Mn). (hazri). Nitrogen is one of the most
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including the plant with no added fertiliser. The both plants with inorganic fertilisers nearly achieved the same height. At the same time‚ the plant with seaweed (OF) stayed at lower height compared to powerfeed (OF). This is probably due to the higher nitrogen‚ potassium and phosphorus content in powerfeed (OF). Similar results were observed by Abdel-Mawgoud A.M.R. et al (2007) and Machado‚ R.M.A et al (2008). From the first week of planting all the tomato plants‚ the plant with TV (IF) fertiliser had
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Humans are affecting this cycle by over using phosphorus. Phosphorus is used to make fertilizers‚ animal’s feeds and detergents. The extensive amount of phosphorus reaching the oceans it’s causing severe water pollution known as eutrophication. Nitrogen is one
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Study Most of the Filipinos earn a living through agriculture. Throughout the years‚ a lot of fertilizers were improvised‚ mostly for the comfort of the Filipino farmers. Human urine‚ for example‚ is a well-balanced nitrogen-rich quick-reacting liquid fertilizer. It contains nitrogen‚ potassium and phosphorus and other nutrients depending on the diet. The health risks associated with use of human urine in plant production are generally low‚ that is why it’s an adequate plant fertilizer. On another
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Enhancers Chapter 1- Introduction Background of the Study: Statement of the problem: The research is generally aimed to determine the effect of sweet potato peelings as soil enhancer. Specific: 1. Is there a change in NPK (nitrogen‚ potassium and phosphorus) in the soil after applying 25‚ 50‚ and 75 grams of sweet potato after the interval of 3 days? 2. Is there a change in the soil ph in the soil’s color after applying 25‚ 50‚ and 75 grams of sweet potato after the interval
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