are carried out : A: Nitrogen + metal → compound X B: X + water → ammonia + another compound C: Ammonia + metal oxide → metal + water + N2. (1) One metal that can be used for reaction A is magnesium. i. Write the formula of the compound X formed. ii. Write the correctly balanced equation for reaction B where X is the compound formed. iii. What property of ammonia is demonstrated by reaction C Q. 9. Industrially‚ ammonia is obtained by direct combination between nitrogen and hydrogen. (i) Write
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We breathe in the air present in the atmosphere. Therefore if the air around us is contaminated with poisonous gases‚ it would have a fatal effect on us. Air Pollution Air Pollution (Image source: sxc.hu) The air naturally comprises of 78% of nitrogen‚ 21% of oxygen‚ 0.9% of oxide gases and 0.1% of inert gases. When this balance is disturbed‚ it causes disruptions of severe proportions. What Causes Air Pollution? Partially combusted exhaust gases released
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Experiment B10- Photocromism and Piezochromism Reece Harms 4320288 Introduction This experiment investigates an oxidative coupling reaction in an to synthesise triphenylimidazole dimer from 2‚4‚5-triphenyl-1H-imidazole. The resulting compound was investigated for both photochromic and piezochromic properties by way of formation of a stable radical‚ utilizing visual observations and UV-Vis as a means of distinction. Both the oxidative coupling reaction and the dimers interaction with light
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irrigation? 3. What is pasteurisation? III. Answer breefly 1. Explain haw do bacteria reproduce 2. List the symptoms of malaria 3. Write three uses of fungi IV. Explain the nitrogen cycle 1 x 5 = 5 V. Choose the correct answer 5 x 1 = 5 1. Nitrogen is used by living organism to make ----------- a. Carbohydrates b. Fats c. Protenis 2. Milk turns in to curd
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Univ SCIENCE B 2006 7(1):79-84 79 Journal of Zhejiang University SCIENCE B ISSN 1673-1581 http://www.zju.edu.cn/jzus E-mail: jzus@zju.edu.cn Relationship between malt qualities and β-amylase activity and protein content as affected by timing of nitrogen fertilizer application* CHEN Jin-xin (陈锦新)‚ DAI Fei (戴 飞)‚ WEI Kang (韦 康)‚ ZHANG Guo-ping (张国平)†‡ (Department of Agronomy‚ Zhejiang University‚ Hangzhou 310029‚ China) † E-mail: zhanggp@zju.edu.cn Received Aug. 25‚ 2005; revision accepted Oct.
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bodies‚ relaxes‚ and stimulates. There is no evidence of the relationship between the structure and functions. Theobromine is an alkaloid belonging to the methylxanthine group. It is made up of seven carbon atoms‚ eight hydrogen atoms‚ four nitrogen atoms‚ and two oxygen atoms. Theobromine is very similar to caffeine but is ten times weaker. Caffeine has two more hydrogen atoms than theobromine. The structure of theobromine also contains two amide groups and three amine groups. Theobromine
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2. There can be a factor such as concentration or temperature that affects the rate of the reaction tremendously so it results in an explosion 3. When the car hits something hard the NaN3 pellet is triggered and it decomposes to form sodium‚ nitrogen‚ and heat. The pellet also contains iron(111)oxide which immediately consumes the sodium creating sodium oxide plus iron‚ then the sodium oxide reacts with the atmospheric carbon dioxide and water to release sodium hydrogen carbonate which in less
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commercial fertilizers. There are many qualities that charcoal brings to the dinner table‚ to research‚ to nature‚ and to the world that you may not recognize as such unless they are pointed out. Due to its extremely high surface area‚ nutrients like nitrogen and phosphorus stick to the charcoal and provide an excellent home to soil friendly bacteria and thus essentially turning charcoal into a slow release fertilizer. Inoculate it with fertilizer before applying. Most of the plants growers nowadays are
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habitat loss‚ such as reduced growth in commercially harvested species and loss of biodiversity‚ habitat‚ and biomass.( SAH.p.13) The surge in the number of U.S. Waters developing Hypoxia is linked to eutrophication due to nutrient ( nitrogen and phosphorus) and organic matter enrichment resulting from human activities. ( Diaz & Rosenberg. 2008. SAH.p.11) Although‚ coastal Hypoxia can be caused by natural processes‚ such as the change in our weather‚ such as El-Nino. Oregon has
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Determine the empirical formula of the compound. (Ans: CH2) 6. A fuel mixture used in the early days of rocketry is composed of two liquids‚ hydrazine‚ N2H4‚ and dinitrogen tetraoxide‚ N2O4‚ which ignite on contact to form nitrogen gas and water vapor. Calculate the mass of nitrogen gas formed when 100 g of N2H4 and 200 g of N2O4 are mixed. (Ans: 131.148
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