Comparing Memories The memory I have chosen for this paper is one in which I was in the fifth grade‚ and happened eleven years ago when I was ten years old. The other perspective besides my own that I will be comparing is my dad’s‚ who was the only other family member who was their when it happened. Here is the event as I remember it happening “I was in grade five and I had recently made the basketball team. After school we would have practice at four o’clock‚ however we got out of classes at
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"CHEMISTRY REVIEW" PROJECT PAGES This Project Page first appeared in the November 1996 issue of Chemistry Review‚ Volume 6‚ Number 2‚ Pages 14 and 15. Chemistry Review is published four times during the academic year by Philip Allan Updates and is a journal for post-16 students. It contains a variety of interesting and colourful articles aimed at 16-19 year-olds taking mainly AS and A2 courses in chemistry. NOTE: Project Page is designed to help you think about your investigation. It is not
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of the hydrochloric acid and the rate of a reaction. To find this out I will react different concentration of hydrochloric acid and magnesium‚ from there I will monitor the gas (hydrogen) produced and analyse the results. Prediction: I predict the higher the molarity of the hydrochloric acid the faster the rate of reaction therefore the quicker the gas will be produced in the specific time interval. Overview of the experiment: In this reaction two substances will be present in the solution
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Publication No. 91860 Rate of Reaction of Sodium Thiosulfate and Hydrochloric Acid Rate Laws Introduction The purpose of this demonstration is to investigate the effect of sodium thiosulfate concentration on the rate of reaction of sodium thiosulfate with hydrochloric acid. The reaction‚ which produces solid sulfur‚ will be followed by measuring the time needed for the reaction mixture to become opaque. The results will be analyzed graphically to determine the order of reaction— the mathematical relationship
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Describe yourself is not easy as you think‚ who is define‚ is limited! Comparing me with something can be so difficult‚ I’m the kind of person that changes my feelings and my attitudes faster than ever! Like in the moment I would like to drink a soda‚ but few minutes later change my idea for a chocolate milk! So I never know exactly what I want! In this moment if I could describe myself with a sentence‚ this would be "Live your life like there is no tomorrow"‚ I love the way this sounds good
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IODINE-CLOCK REACTION DATE SUBMITTED: 14 DECEMBER 2012 DATE PERFORMED: 7 DECEMBER 2012 ABSTRACT Chemical kinetics involving reaction rates and mechanisms is an essential part of our daily life in the modern world. It helps us understand whether particular reactions are favorable and how to save time or prolong time during each reaction. Experiment demonstrated the how concentration‚ temperature and presence of a catalyst can change the rate of a reaction. 5 runs of dilution and reaction were made
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and purify a compound. This was achieved using techniques that allowed the extraction of the acid‚ the isolation of the neutral compound and the melting point classification of the neutral compound to test the purity of the sample. Chemical Reactions: HA + OH- A- + H2O R-COOH + OH- R-COO- + H2O Organic Acid Insoluble in H2O Conjugate base Soluble in H2O Procedure: A 0.170g sample consisting of a mixture of 0.110g of an unknown neutral compound and 0.060g of benzoic
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Reaction Rate Coursework Aim To see how the concentration of a reactant affects the rate of reaction‚ in this case sodium thiosulphate and acid. Scientific Background For a reaction to occur‚ the particles of the reactants must be colliding with each other with enough energy‚ the amount of energy needed for the reaction is called activation energy. Activation energy is altered by temperature‚ concentration‚ surface area of and the pressure on the reactants. Stirring the reactants also increases
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Biology coursework How does the temperature affect the rate of reaction? Introduction For our experiments‚ I was investigating what affects the rate of reaction. We used Hydrogen peroxide to test the rate of reaction‚ with the temperature of this being our variable that we changed. Hydrogen peroxide is a clear‚ colourless liquid which has various amounts of uses within the laboratory‚ industrial purposes and even in our households. It is mainly used for cleaning products and hair dye but is
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Precambrian time‚period of time that reaches out from around 4.6 billion years back to the start of the Cambrian Period‚ 541 million years prior. The Precambrian speaks to more than 80 percent of the aggregate geologic record. All life-structures were for quite some time expected to have begun in the Cambrian‚ and consequently all prior rocks were gathered together into the Precambrian. Albeit numerous fluctuated types of life developed and were safeguarded widely as fossil stays in Cambrian sedimentary
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