environments (such as water‚ air‚ acids‚ bases‚ etc.) come into contact. Corrosion is the act of deterioration in metals.[1] A chemical reaction occurs between the metal and it’s environments Eg. Copper + Oxygen ( Copper Oxide Cu (I) + O ( CuO Rust is very similar to corrosion but only occurs in iron and steel (an iron alloy). Rust is formally known as oxidation‚ which occurs when Oxygen (O) comes into contact with iron (Fe). Overtime‚ the oxygen reacts and combines chemically with the
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Identify an unknown carbonyl compound © KCl http://hk.geocities.com/fatherofchemistry Objective To classify a carbonyl compound by a simple test and to identify it by the precipitation of a derivative. Principle In this experiment‚ the unknown compound is either an aldehyde or a ketone from Table 90. In the first part‚ on undergoing Tollen’s & Fehling’s tests‚ ketone will have no reaction. In the second part‚ by preparing a derivative of the compound with 2‚4-dinitrophenylhydrazine
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Many people believe that one can be successful if he /she is committed‚ honest‚ faithful or intelligence. But‚ the foundation of each of these qualities lies in believing the power the person has‚ and working accordingly to achieve the goal. There are many people‚ who are honest‚ beautiful‚ good and soft spoken‚ intelligent and even faithful‚ but only some are successful in achieving their goal. While all of these characteristics are equally important and act as the medium for success‚ the most important
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www.kalvisolai.com 5 Mark Compulsory Problems with Solution 1 +2 CHEMISTRY Q. 70 Compulsory Problems with Solution Problems are solved in easiest way (As per Government Answer Key) www.kalvisolai.com 5 Mark Compulsory Problems with Solution 2 SALIENT FEATURES Dear Students ❆ Q.No: 70 is asked as compulsory problem in Govt Exam. ❆ Two problems to be answered out of four problems. ❆ To simplify the problem‚ hints and expected compounds related to molecular formula‚ general formula are
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Subject: Chemistry Topic: The Periodic Table The periodic table is a classification of all the elements based on ATOMIC NUMBER. It is composed of HORIZONTAL PERIODS and VERTICAL GROUPS which contain the elements arranged: *the order of INCREASING ATOMIC NUMBER *in the relation to the ELECTRON STRUCTURE of the atoms *in the relation to their CHEMICAL PROPERTIES (Criteria Used For Placing ELEMENTS in the Periodic Table) 1. ATOMIC NUMBER 2. NUMBER OF SHELLS (PERIOD) 3. NUMBER OF OUTER
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Decomposition of hydrogen peroxide 1. Write the balanced equation for the breakdown of hydrogen peroxide. 2H2O2 —> 2H2O + O2 2. Write a balanced equation for another decomposition reaction. Decomposition for copper carbonate: CuCO3 → CuO + CO2 Part III: Reaction between zinc and acetic acid 1. Write the balanced equation for the reaction between zinc and acetic acid. Zn(s) + 2CH3COOH(aq) —> Zn(OOCCH3)2(aq) + H2(g) 2. Classify the reaction between zinc and acetic
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Use a variety of sources for the collection of data‚ both primary and secondary (1) (a) Prepare and implement a plan for the collection of primary and secondary data for a given business problem (b) Describe and justify the survey methodology and frame used (c) Develop and use a questionnaire and justify its design for a particular purpose (2) Apply a range of techniques to analyze data effectively for business purposes (a) Create information for decision making by summarizing data using
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A Remote Patient Monitoring System for Congestive Heart Failure Myung-kyung Suh & Chien-An Chen & Jonathan Woodbridge & Michael Kai Tu & Jung In Kim & Ani Nahapetian &Lorraine S. Evangelista & Majid Sarrafzadeh Received: 17 January 2011 /Accepted: 3 May 2011 # Springer Science+Business Media‚ LLC 2011 Abstract Congestive heart failure (CHF) is a leading cause of death in the United States affecting approximately 670‚000 individuals. Due to the prevalence of CHF related issues‚ it is prudent
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Roald Dahl‚ the author of the short story "Beware of the Dog" clearly exemplifies the modern‚ simplistically styled theme of not always being what you’re told or what you hear. Peter‚ the main character overtime gradually comes to a realization that the Hospital he is staying at isn’t what its meant to be perceived as. He thinks he is in Brighton‚ a town in England when really he is in France behind the enemy lines. The hospital nurse assures Peter saying‚"’You’re in Brighton’"‚ however they were
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Sample Paper – 2012 Class – X Subject –Chemistry Chemical Equations and reactions Very Short Answer (1 marks each) Write the name and formula of compounds forms between a. Potassium and iodine ion .b.Sodium and sulphide ions . c. Aluminums and chloride ions 2. Why does milk sour when kept for a long time/ 3. What happen when hydrogen combine with oxygen in presence of electric current/ 4. Define electrolysis. 5. What is decomposition reaction? Give an
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