E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid‚ hydrochloric acid‚ and a weak acid‚ ethanoic acid (common name‚ acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate
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to the reading comprehension skills of reading materials on the printed page will be successful. In this regard being a grade I teacher who is concerned for the development of my pupils‚ I was discovered the following Intervention Programs for “Slow and Non Readers” Which I believed could make a difference in their comprehension skills and reading abilities. I hope that my humble efforts and noble cause will be put into practice by the other and will have considerable results to my objective
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Abstract This experiment is to study the effect of temperature on the rate of reaction between potassium permanganate with oxalic acid. We used 2cm3 of 0.02M potassium permanganate and 4cm3 of 1M sulphuric acid into a test tube. In another test tube‚ we placed 2cm3 of oxalic acid. We placed the test tubes in a water bath at 40‚ 45‚ 50‚ 55 and 60oC respectively. When the solutions have attained these temperatures pour the oxalic acid into the acidified permanganate solution and recorded the time
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There are several important ways in which humans can slow biodiversity loss‚ although there is no way to bring back the species that have already gone extinct. Protecting Areas Creating protected areas where human activity is limited is the best way to prevent deforestation and exploitation of organisms and the resources they need to survive. In order to truly make a difference‚ much planning needs to go into the creation of a protected area. It needs to consider all elements of the ecosystem
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AIR-STANDARD ANALYSIS: INTERNAL COMBUSTION ENGINES Air-standard analysis treats the fluid flow through the entire engine as air and approxi¬mates air as an ideal gas. In a real engine inlet flow may be all air‚ or it may be mixed‚ up with 7% fuel‚ either gaseous or as liquid droplets‚ or both. In air-standard analysis‚ even if all fluid in an engine cycle were air‚ some error would be introduced by assuming it to be an ideal gas with constant specific heats. At the low pressures of inlet and
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Outline some factors which explain why boys are making slow progress in the education system (12 marks) There are many reasons why boys are making slow progress in the education system‚ statistics show that girl outperform boys at GCSE‚ in 2006 9.6% more girls than boys obtained 5+ more A*-C grades. There are many reasons for boys not doing as well in the education system‚ it’s split into two categories: inside school factors‚ and outside school factors. An outside school factor includes the
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and language in depicting the realities presented in the story. She helps the readers attain a good understanding of the possible beauty in what could otherwise be morbidity in its very notion. Death is presented and tackled in the most acceptable terms like making anything possible because of the absence of feeling. Analysing the story using Mimetic Approach‚ we would probably be asking ourselves if it is possible for a dead person to still live in our world‚ if it is possible for him to remember
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Molar Heat of Combustion Aim: To find the molar heat of combustion for four different alkanols: 1. Methanol 2. Ethanol 3. 1-Propanol 4. 1-Butanol - And to compare the experimental value with the theoretical. Background: The Molar Heat of Combustion of a substance is the heat liberated when 1 mole of the substance undergoes complete combustion with oxygen at standard atmospheric pressure‚ with the final products being carbon dioxide gas and liquid water. (Ref. “Conquering Chemistry‚ Roland
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Identify and describe three strategies you can use to manage your time. Create a Prioritised to do list. To do this‚ first you must identify the goals or current tasks and list them. Then you must prioritise them on a scale of 1 to …. (1 as the most important)‚ considering urgency and difficulty. Create a work Schedule. This is a list of tasks that have all been allocated a timeframe in which to be completed or contributed to. These schedules can be reviewed and also set out on a daily‚ weekly or
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