state‚ liquid under pressure. Colourless Intensely irritating ammoniacal odour‚ with an odour threshold of 5-53 ppm Soluble in water alcohol and ether. pH of 11.7 Flammability limit of 15.5-25% Auto ignition temperature of 651C Elemental hydrogen and nitrogen gas are abundant and inexpensive. Using temperature 500C and pressure 150-200 atm‚ iron catalyst. Applications Mainly Fertilizer explosives such as TNT and ammonium nitrate Nylon Used for making ice and air conditioning units
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combinations of elements. While you probably know your body is mostly water‚ which is hydrogen and oxygen. Most of the human body is made up of water‚ H2O‚ with cells consisting of 65-90% water by weight. Therefore‚ it isn’t surprising that most of a human body’s mass is oxygen. Carbon‚ the basic unit for organic molecules‚ comes in second. 99% of the mass of the human body is made up of just six elements: oxygen‚ carbon‚ hydrogen‚ nitrogen‚ calcium‚ and phosphorus. Chemistry of Love The emotions that you
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Periodic Table: * Mass Number = protons + neutrons in the nucleus * Atomic Number = number of protons in the nucleus * Number of neutrons = mass number – atomic number Example: Lithium (Li) * # of protons + # of neutrons = mass # * 3 + 4 = 6.9/ 7 * The atomic mass is the mean of all the isotopes of Lithium in nature; round the number * Isotopes of a specific element have a varying number of neutrons * The number
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DEFINITIONS OF OXIDATION AND REDUCTION (REDOX) This page looks at the various definitions of oxidation and reduction (redox) in terms of the transfer of oxygen‚ hydrogen and electrons. It also explains the terms oxidising agent and reducing agent. Oxidation and reduction in terms of oxygen transfer Definitions • Oxidation is gain of oxygen. • Reduction is loss of oxygen. For example‚ in the extraction of iron from its ore: [pic] Because both reduction and oxidation are going on side-by-side
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production. Group # Production (MTPD) Group1 600 Group2 750 Group3 950 Group4 1100 Group5 1300 Group6 1450 Group7 1650 Group8 1800 The production of ammonia requires a mixture of hydrogen and nitrogen in a ratio of 3:1. The source of nitrogen is invariably air. The hydrogen is produced by steam reforming of naural gas followed by autothermic reforming with air. Currently following four commercial processes are available to choose from: 1. Haldor Topsoe Process 2. Linde
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Process and importance of fusion in stellar evolution. Huge clouds of hydrogen atoms and gravity cause the atoms to be attracted to each other creating them to slowly move towards the centre of mass.The atoms then continue condensing until something happens.All of the atoms are trying to get to the centre of mass. While this is happening the temperature becomes 10 million Kelvin and at that point there is enough temperature and enough pressure to overcome the coulomb forces‚ bringing the two protons
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Toothpaste. Materials This demonstration requires chemicals that are not available to the public. Chemistry teachers and science demonstrators are specially trained in the hazards of using these chemicals. * Hydrogen peroxide (30%) - This is ten times stronger than the normal hydrogen peroxide you can find at the store * Sodium iodide solution‚ 2 M or * Potassium iodide solution‚ 2 M * Liquid soap * Food coloring * Graduated cylinder (500 mL) * Safety glasses * Rubber
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Review paper. Catalysts analysis for MSW pyrolysis and gasification Tursunov Obida‚ Khairuddin Md Isaa‚ Dr. Ong Soon Ana aSchool of Environmental Engineering‚ University Malaysia Perlis UniMAP‚ Arau 02600‚ Perlis‚ Malaysia Abstract MSW pyrolysis and gasification are the possible alternative to the direct use of fossil fuel energy. MSW‚ a CO2 neutral source of renewable fuel‚ can contribute to the demand for heat‚ electricity and synthesis gas (syngas). Nevertheless‚ there are inefficiencies in
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Chemistry Project on Evaporation of Liquid Acknowledgement I would like to show my gratitude to my Chemistry Teachers Ms Seema More without whose support and encouragement this project could never have have taken the present shape . I would also like to thank my lab incharge Mr. Kakde For helping Me out During The Practical Part Of This Project. Aim Acknowledgment I am are greatly thankful for the cooperation and help from the Community Science Center (CSC) authorities and the Chemistry lab
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After the matter had cooled and spread out‚ these particles combined to form hydrogen and allowed the photons to freely travel without interacting with free electrons‚ forming what we know of today as the Cosmic Microwave Background (CMB). Between 150 million and 1 billion years after the Big Bang (6 < z < 20)‚ structures such as stars‚ galaxies and quasars began to form and release energy sufficient enough to reionize Hydrogen in the intergalactic medium (IGM). However‚ currently no evidence exists
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