(Name) (Course Name) (Instructors Name) (Date) Summary of chemistry lab report Introduction The two factors which affect the yield of products in a chemical reaction is the amount of starting materials (reactants) and the percent yield of the reaction. Many experimental conditions for example temperature‚ and pressure can be adjusted to increase yield of the desired product‚ in chemical reaction‚ but because chemicals react according to fixed mole ratios( stoichometrically)‚ the only limited
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1. Abstract 3 2. Introduction 3 3. Experimental details 4 3-1. Materials 4 3-2. Apparatus 7 3-3. Procedure 7 3-4. Special Precautions 8 3-5. Lab techniques 9 4. Results 9 5. Discussion 14 6. Conclusion 16 7. References 17 1. Abstract This lab report discusses an experiment to study thermodynamics and find ideal ionic compound to be used in hand warmer. Calorimetry experiment was conducted by dissolving three ionic compounds‚ CaCl2‚ Na2CO3‚ and NaCl‚ in distilled water to measure the enthalpy
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process very large amounts of data very quickly. They are particularly useful for occasions where high volumes of calculations need to be performed‚ for example in meteorological or astronomical applications. 1.2 A mainframe computer system uses a powerful central computer‚ linked by cable or telecommunications to terminals. A mainframe has many times more processing power than a PC and offers extensive data storage facilities. Mainframes are used by organisations such as banks that have
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Knowing your ideal work culture is beneficial in every area of the work place. Organization‚ values‚ vision and work language are all‚ different forms‚ of work culture. This essay will examine the work culture; appropriate channels for communications‚ ways to improve the quality of the work culture‚ and steps that can take to create a better work culture. The first question we examine will be how can knowing your ideal work culture help you in determining appropriate channels for communication
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Chemistry (the etymology of the word has been much disputed)[1] is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions.[2] It is a physical science which studies various substances‚ atoms‚ molecules
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Should mothers work or stay at home Respected lecturer‚ dear colleagues. Good afternoon. Today I would like to talk to you about something which is very debatable. Should mothers work or stay at home. Well‚ I am pretty sure that people will have different opinions regarding this matter. I disagree to a large extent with the statement that mothers should work instead of staying at home. Because‚ mothers will absolutely cannot able to tackle the whole responsibilities both at home and at the workplace
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Making meetings work for you Do you dread meetings more than Monday mornings? Do you find them boring‚ unproductive and far too long? Meetings are central to most organizations; people need to know what their colleagues are doing and then take decisions based on shared information and opinions. How well you present yourself and your ideas‚ and how well you work with other people‚ is crucial to your career. RUNNING A MEETING Only call a meeting if you and your colleagues are quite sure about its
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Chemistry * a science that dealing with the structure‚ composition and properties of items and with the transformations that they undergo * the composition and chemical properties of a substance * chemical processes and phenomena (as of an organism) Examples: - Digestion; enzymes promoting chemical reactions that power our bodies. Lifting your arm requires your body to make and burn ATP using oxygen with carbon dioxide as one of the waste gases produced. - The internal combustion
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Source: Chemistry by C. Mortimer PP 1-5 Chemistry by R.S. de Borja PP 1-5 Definition of Chemistry Chemistry is concerned with the composition and the structure of substances and with the forces that hold this structure together. And the changes that undergoes with the energy involved in them. History Chemistry which emerged‚ took hundreds of years to develop the history of its development can be divided ranging into five
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EXAMINATIONS General Certificate of Education Ordinary Level 5070/31 CHEMISTRY Paper 3 Practical Test October/November 2010 CONFIDENTIAL INSTRUCTIONS *4711088250* Great care should be taken to ensure that any confidential information given does not reach the candidates either directly or indirectly. The Supervisor’s attention is drawn to the form on page 7 which must be completed and returned with the scripts. If you have any problems or queries regarding these instructions‚ please
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