it is an odourless‚ colourless gas that is a large percentage of ‘natural gas’ and is a large contributor to global warming as it is a greenhouse gas and is flammable so is used as a fuel. Methane is a product of the covalent bonding of carbon and hydrogen. Products of the combustion of methane include carbon dioxide‚ water‚ soot and carbon monoxide. Soot and carbon monoxide are produced during the incomplete combustion of methane. Methane is combusted to generate energy in power plants‚ the formula
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Zinc Iron Lead Zn Fe Pb Reduction of the metal oxides in a blast furnace. Carbon is used as the reducing agent. It is often in the form of coke (made from coal). Although this uses a lot of energy‚ this is cheaper than using electricity. Hydrogen Copper Silver Gold Cu Ag Au These metals occur “native” (as uncombined elements) in the Earth’s crust. Copper also exists as compounds in ores. These can be reduced using carbon in a blast furnace.
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is very fast! (Instead‚ your teacher may tell you to run cold water over the outside of the test tube. Be sure to use a test tube holder to hold the test tube since the reaction gives off considerable heat.) The products forming in this step are hydrogen gas‚ H2(g)‚ aluminum chloride solution‚ AlCl3(aq)‚ and metallic copper‚ Cu(s). When the reaction is finished‚ remove and discard the liquid. Wash the solid with half a pipet of distilled water. Discard the liquid. Wash the solid again with half
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® keep it simple science Copying is permitted according to the Site Licence Conditions only Preliminary Physics Topic 4 THE COSMIC ENGINE What is this topic about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. THE HISTORY OF OUR UNDERSTANDING OF THE UNIVERSE 2. HOW THE UNIVERSE BEGAN (THE "BIG BANG" THEORY) 3. LIFE-CYCLES OF THE STARS 4. ENERGY FROM THE SUN‚ & ITS EFFECTS ON US but first‚ let’s revise... The Structure of the Universe The EARTH
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Title of Experiment 12: The Effect of Ionic Strength on the solubility of an Electrolyte Aim: The purpose of this experiment was to determine the thermodynamics variable of enthalpy‚ ∆H for the dissolution reaction of boric acid in water. The solubility of boric acid was measured over a range of various temperatures by finding out at what temperature crystallization began for solution of different molarities. A graphical relationship between the natural logarithm of molal concentration and the inverse
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substances‚ which will then turn into one compound‚ usually being a more complex substance. The formula for synthesis is A+B → AB‚ and an example would be 2Na+Cl2 → 2NaCl. Another good example to better understand is two simple substances‚ such as hydrogen and oxygen can yield a more complex substance → water. Combustion has reactants of: metal and oxygen‚ nonmetal and oxygen‚ and a compound and oxygen yielding either the oxide of the metal‚ the oxide of the nonmetal‚ or two or more oxides. If there
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Cyclohexane is a saturated hydrocarbon and cyclohexene is an unsaturated hydrocarbon due to the presence of double bond.Both hydrocarbons produce carbon dioxide and water during combustion test. When the oxygen is limited‚ the product will be carbon monoxide and water. The alkenes are highly flammable and burn readily in air‚ forming carbon dioxide and water. In this experiment‚ the combustion of cyclohexene burns in an orange flame and produces relatively high amount of black soot. The black soot
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[pic] |THE MECHANISM FOR THE ACID CATALYSED HYDROLYSIS OF ESTERS | | | |This page looks in detail at the mechanism for the hydrolysis of esters in the presence of a dilute acid | |(such as hydrochloric acid or sulphuric acid) acting as the catalyst. It uses ethyl ethanoate as a typical| |ester.
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A schematic diagram of DLR scramjet model [7-9] is described in Fig. 1.The air enters into combustion chamber at M=2.0 whereas hydrogen fuel (H2) is injected parallel to the air stream at M =1.0. The width and height of the combustor section at the entrance is 40 mm and 50 mm respectively which is then diverged at an angle of 3ο on the upper wall of the combustor. The strut is 32 mm long and 6mm height which are located at a distance of 77 mm from the entrance. The boundary conditions of Waidmann
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Nucleophilic hydride is unstable by itself so it must be used through a hydride reagent such a NaBH4 or LiAlH4. The hydrogen is more electronegative than boron and aluminum giving it a negative charge. This causes the hydrogen to act like a hydride. This is important because it causes it causes it to be selective. A hydride has a negative charge so it will attack the positive carbon in a carbonyl group. This makes it more
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