Chemistry Unit 2 Area of Study: 1: Water Chapter 11: Measuring solubility Measuring Solubility Solubility: the maximum amount of that substance that can be dissolved in a that temperature Saturated solution: a solution which no more solute can be dissolved at that temperature Measuring solubility Determine the maximum mass of solute that can be dissolved in 100 grams of solvent at a particular temperature Worked Example A maximum of a 6g of solute can be dissolved in 20g of water at 20ºC
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The Titration of a Basic Solution of Unknown Molarity with a Standard Hydrochloric Acid Solution Abstract The aim of the experiment was how to determine the molarity of a solution. My hypothesis was if I have to determine the molarity of a NaOH solution‚ then I would have to use a standard solution of HCl solution because I would need to neutralize each other to determine the concentration of the solution of NaOH. The method that I used for this experiment was titration. Titration helped
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Fireworks and What Makes Them Go Sparks! Colors! Things that go BOOM! Chemistry doesn’t get much better than this. Ever notice how minutes drag on for hours when you’re waiting for a fireworks show to begin? Everyone’s thinking the same thing: The sky is dark enough the hot dogs are all eaten…come on when are they going to start? Then the first rockets streak into the sky…Ooh! Aah! Yes‚ it was worth the wait. The birthplace of fireworks is generally recognized as China.
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ST ANDREW’S JUNIOR COLLEGE JC 2 Preliminary Examination CHEMISTRY 9647/03 Higher 2 13 September 2010 Paper 3 Free Response 2 hours Candidates answer on separate paper. Additional Materials: Answer paper‚ Graph Paper‚ Data Booklet READ THESE INSTRUCTIONS FIRST Write your name and civics group on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚
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PAHANG TRIAL 2009 EXAMINATION CHEMISTRY PAPER 2 MARKING SCHEMES SECTION A - Structural Questions: Question 1. (a) (i) The presence of isotopes 1M (ii) Let the abundance of 63X be a %. The % abundance of 65X. = ( 100 – a ) 1M Relative atomic mass = ( 62.93 x a) + ( 64.93 x ( 100 -a) ) 1M
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The Importance of Black Photography I think that the point of the reading‚ “In Our Glory: Photography and Black Life” is seeing the struggle the black people had to go through involving the image people thought they represented‚ and also how photography has become an important aspect in their life. A long time ago black people had to deal with the fact that white people thought they weren’t equal. The whites were perceived to be better than the blacks. Images can be looked at in the same way
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least in part) to other forms which we can perceive directly (for example‚ kinetic‚ gravitational‚ or electrical energy)‚ and which can be used to do useful things such as propel an automobile or a 747. The principles of thermodynamics govern the conversion of thermal energy to other‚ more useful forms. For example‚ an automobile engine can be though of as a device which first converts chemical energy stored in fuel and oxygen molecules into thermal energy by combustion‚ and then extracts part of that
Free Force Energy Potential energy
How will our life go on without internet? It’s hard to imagine that we live in a world without internet which plays an important role in many aspects of our lives. Thus‚ it’s worth discussing how our life will go on without internet to see what benefits and disadvantages it brings to us. It’s beyond question that our life will be inconvenient if we’re not available to internet. For one thing‚ we students surf the internet for information frequently in order to write papers‚ find materials for self-study
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The Importance of politics in our everyday life can’t be measured by a literal scale but it happens to be needing a thorough analysis to discuss. Though we can say that politics is important in our lives because it somehow affects our society balance. As society changes because of politics‚ people consider and reconsider how to deal with their own judgement in everyday scale due to consequences given by the politicians that commands their city or municipality. It is an unfortunate common view that
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Mark Christian M. Reyes PHI 001 2BSA-1 9:00–10:30 [MW] Our Inner Beast “Life is unfair.” This is the most malevolent lesson I have learned and yet the most consistent of all the ideas I have encountered by far. Life can bring to existence anything that could push us‚ break us or shake us. It can wreck us to our very essence – injure us to our very locus – scar us to our very center – and weaken us to our very core. And yet it does not give us the permission to strike back. Ending
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