Senior Secondary Examination Examination 2010 - 2011 An investigatory project on Chemistry PROJECT: TO STUDY THE PRESENCE OF OXALATE ION CONTENT IN GUAVA FRUIT AT DIFFERENT STAGES OF RIPENING. Submitted by: ANUKRITI SHARMA Class- XII – A (sci.) Roll no: 06 Air force school Chakeri ‚ Kanpur(up) CERTIFICATE This is to certify that ANUKRITI SHARMA has satisfactorily completed the project in CHEMISTRY on ‘OXALATE ION´ prescribed by the AISSCE course in this school in the year 2010-2011
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Chemistry 12 Unit 1 - Reaction Kinetics Chemistry 12 Worksheet 1-3 - Reaction Mechanisms 1. It is known that compounds called chlorofluorocarbons (C.F.C.s) (eg. CFCl3) will break up in the presence of ultraviolet radiation‚ such as found in the upper atmosphere‚ forming single chlorine atoms: CFCl3 CFCl2 + Cl The Cl atoms then react with Ozone (O3) as outlined in the following mechanism. Step 1: Step 2: Cl + O3 ClO + O2 ClO + O Cl + O2 (single "O" atoms occur naturally in the atmosphere
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Chemistry 12 Unit 2 Notes - Equilibrium Chemistry 12 Tutorial 5 – The Equilibrium Constant (Keq) What is Keq ? The "K" in Keq stands for "Constant". The "eq" means that the reaction is at equilibrium. Very roughly‚ Keq tells you the ratio of Products/Reactants for a given reaction at equilibrium at a certain temperature. [Products] [Reactants] K eq = It’s not quite this simple when we deal with real substances. Let’s take an example. It has been found for the reaction: 2HI(g )
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computer ------------------------------------------------- Computational chemistry From Wikipedia‚ the free encyclopedia Computational chemistry is a branch of chemistry that uses principles of computer science to assist in solving chemical problems. It uses the results of theoretical chemistry‚ incorporated into efficient computer programs‚ to calculate the structures and properties of molecules and solids. Its necessity arises from the well-known fact that apart from relatively recent results
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California History Vocabulary July 1769: Spanish Gov. chose to settle in California in San Diego 1542 official welcoming for Spanish to California October 12‚1492: Columbus’ expedition to find treasure for queen Isabella 1517 Spanish created civilization where the Native Americans were 1519 Cortez comes to shore at the FIRST Spanish city Vera Cruz Aztec- Montezuma was the god there at the time Cortes came to America -Montezuma sent 13‚000 pounds of gold to Cortes to leave his land.
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PAGE NO.121(CHAPTER-9 CHEMISTRY PRACTICALS) Q4.How would you distinguish between the following: a)Calcium nitrate and lead nitrate using ammonium hydroxide Ans: Add ammonium hydroxide to the given substance‚ calcium nitrate does not form any ppt. with ammonium hydroxide. But lead nitrate forms chalky white ppt. With ammonium hydroxide b)Calcium nitrate and lead nitrate using sodium hydroxide solution Ans: Add sodium hydroxide to the given substance‚ Calcium nitrate forms milky white ppt
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Food prices are rising faster in India than in other large economies. As the country’s population continues to grow and middle class incomes rise‚ there is increasing pressure on the government to provide food for the entire country. Despite rapid economic growth over the past decade‚ India still struggles to feed its population: According to the 2005/2006 National Family Health Survey‚ 40 percent of children below the age of 3 were underweight and 45 percent were stunted.7 Lack of investment has
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Chapter 5 Read chapter 5 (“Personality and Values”) in your e-text‚ answer these questions‚ and watch the chapter 5 quiz video for course mentor clarification. 1) Which of the following does the heredity approach state? a) An individual’s personality is determined by the social background one is brought up in. b) An individual’s personality is determined by molecular structure of the genes. c) An individual’s personality is influenced by the economic settings he is surrounded by. d) A person’s
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ACKNOWLEGEMENTS ACKNOWLEGEMENTS First of all I would like to thank my chemistry teacher Ms. Shyamala for providing adequate information which was a great helping hand from her .I would like to thank my parents. Even their support was an immense assistance. First of all I would like to thank my chemistry teacher Ms. Shyamala for providing adequate information which was a great helping hand from her .I would like to thank my parents. Even their support was an immense assistance. Certificate
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Sustainable Chemistry Terry Collins* Chemistry has an important role to play in achieving a sustainable civilization on Earth. The present economy remains utterly dependent on a massive inward flow of natural resources that includes vast amounts of nonrenewables. This is followed by a reverse flow of economically spent matter back to the ecosphere. Chemical sustainability problems are determined largely by these economy-ecosphere materials flows (see the figure‚ below)‚ which current chemistry education
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