DELHI PUBLIC SCHOOL‚RANIPUR‚HARIDWAR LESSON 6:COMBUSTION AND FLAME DATED:24.07.14 1 COMBUSTION: When a substance combines readily with oxygen to give heat and (light) it is called combustion. 2 COMBUSTILE SUBSTANCE: A substance which burns easily to give heat it is said to be combustible. For ex. Wood ‚paper 3 FUEL: A substance that is burnt for obtaining heat and light is called a fuel. Carbon based fuel: wood ‚coal‚wax ‚petrol etc. Non carbon based fuel: hydrogen 4 CHARACTERISTICS OF AN
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Chemistry – Heats of combustion. To determine the heats of combustion of selected alkanols and to use this information to determine the heat of combustion for a longer chain alkanols. Formula ΔH=-mCΔT Heat of combustion ΔH/n = molar heat of combustion. Materials -100 degrees thermometer -glass stirring rod -aluminium beaker -electronic balance -bosshead and clamp -retort stand Method 1) Set up the apparatus as shown above. 2) Measure the weight of aluminium can 3) Use the
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Danny Mendoza 3/5/13 English 14 Prof. Mareneck Informative Speech Joaquín Guzmán Loera Thesis Statement: How Joaquín Guzmán Loera became a mythical figure in Mexico‚ both a narco folk hero and a villain Main Points: His beginnings/ Birth Rise to Power/ Control of the Sinaloa Cartel Legend of “El Chapo” • Born on April 4‚ 1957‚ to a poor family in the rural town of La Tuna Badiraguato‚ his abusive father kicked him
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The Legacy of Jerry Falwell Organization: This speech uses topical organization. Audience analysis: The average age of the audience is between 19 and 23 years of age. There are a greater number of males than females‚ and all are Caucasian. All are from conservative religious backgrounds and abide by Liberty University’s guidelines. Central Idea: To reflect and admire the life of Jerry Falwell‚ who lived to win souls for Christ. Introduction I. Attention-getter: A. After 73
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Professor Department of Aerospace Engineering IIT Kanpur 13th July‚ 2012 ABSTRACT Numerical Studies of Microcombustion in a Micro-channel There are a lot of methods that converts chemical energy to thermal energy like fuel cells. But combustion is the most important one to obtain thermal energy from various fuels including hydrogen‚ natural gas‚ fuel oils because of its more energy output. Microcombustion is a potential energy source for small devices like unmanned vehicles and micro
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Heat of Combustion Questions 1. When bonds are broken‚ energy is required. When bond are formed‚ energy is released. All combustion reactions are exothermic. Suggest a reason for this in terms of the bonds broken and bonds formed. The energy required to break the bonds is greater than the energy required to form. 2. Explain why the heat of combustion of alkanols increases as the length of the carbon chain increases. The heat of combustion of alkanol increases as the length of carbon chain
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Addition of carbon Combustion is the rapid burning of fossil fuels. Stored carbon in coal‚ oil and natural gas returns to the atmosphere when these fossil fuels are burnt and during natural combustion occurrences such as volcanic eruptions. Fossil Fuels such as coal are constructed when a living organism dies and decomposers‚ ie Fungi and microbes are unable to decompose it. After the organic material is untouched for millions of years‚ it eventually turns into fossil fuels. Petroleum‚ coal and
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Heats of Combustion of Alkanols Aim: To perform a first-hand investigation to determine the heats of combustion of selected alkanols. Hypothesis: It was predicted that methanol would have the highest molar heat of combustion‚ decreasing as the chains become longer. Equipment: • Three spirit burners containing methanol‚ ethanol and propan-1-ol respectively • Electronic scales • Water • 100ml measuring cylinder • Retort stand and boss-head clamp • Copper beaker • Thermometer Method:
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Generation FCAT! Unfortunately my generation was driven by budget cuts‚ and standardized test. I feel like I got cheated out of what could’ve been a more productive learning environment. Throughout all twelve years of school‚ all everyone would worry about is passing the FCAT. The teaching curriculum was based off of that standardized test‚ teachers that actually loved teaching got let go due to budget cuts. Most of my highschool years I had substitutes for two weeks at a time! This summer I
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1.Tips for talking with your child about drugs. American Council for Drug Education. http://www.acde.org/parent/Tips.htm. Accessed Oct. 26‚ 2012. 2.Signs and symptoms of drug use. American Council for Drug Education. http://www.acde.org/parent/signs.htm. Accessed Oct. 26‚ 2012. 3.Drug guide for parents: Learn the facts to keep your teen safe. Partnership at Drugfree.org. http://www.drugfree.org/drug-guide. Accessed Oct. 26‚ 2012. 4.Drug abuse prevention starts with parents. American Academy of
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