Lab #4: Aqueous Reactions Introduction: In this experiment we studied the two different types of aqueous chemical reactions‚ double replacement and single replacement. In a double replacement reaction one or both of the products is an insoluble ionic compound or otherwise known as a precipitate; or a non-electrolyte; or a gas. In a single replacement reaction there is typically a metal and an ionic compound consisting of a metal cation and a non-meatl anion. Singel replacement ractions occur when
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rate of reaction (mol dm-3 s-1) for the following chemical reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Research question: How does altering concentration (mol dm-3) of hydrochloric acid (HCl) affect the rate of reaction (g/s) for the following reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Background information: The reaction between calcium carbonate and hydrochloric acid is an example of a neutralization reaction between an acid and a base. Neutralization reactions involve
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Abstract “Reaction Time” is the interval of time between the application of a stimulus and the detection of a response and has been thought to differ based upon the effects of modality and warning signals. In the “Reaction Time” experiment a total of 24 students from the University of Cincinnati participated in an experiment consisting of two sensory modalities‚ audition and vision‚ which were combined with two levels of warning signal status. The two levels of warning signal status were signal
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n the article‚ “Startling Finds on Teenage Brains” the author was very bias‚ and only talked about what he believed to be true and right‚ that teenagers have massive losses of brain tissue in areas of self control which almost is the cause to teenagers impulsive actions and committing crimes. I disagree with the author on this statement for reasoning why teenagers act the way they do‚ he uses this as an excuse. Teenagers must have always loss brain tissue‚ and just because they lose some self control
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High School Students’ Conceptions about Energy in Chemical Reactions (focusing only in exothermic and endothermic reactions). Aim The aim of this study is to investigate students’ understanding of the energy concept in chemical reactions particularly in endothermic-exothermic reactions. Both qualitative and quantitative methodology was used for this investigation. A twenty-item multiple choice test was developed about the topic to measure the students’ understandings. This concept test was
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HACKERS Submitted by: Mariel A. Ricohermoso BSIT 3B Submitted to: Mr. Juan Leandro Achaval Hackers Summary: A Seattle boy Dade “Zero Cool” Murphy (Jonny Lee Miller) is arrested and charged‚ at the age of 11‚ with crashing 1‚507 systems in one day and causing a single-day 7-point drop in the New York Stock Exchange. And because of that he was banned to own or operate a computer or touch-tone telephones until his 18th birthday. Before Dade turns 18‚ his mother
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metals arranged in order of their reactivity based on displacement reactions‚ reduction of their oxides by hydrogen or carbon‚ the relative ease of decomposition of their compounds and reactions with oxygen‚ dilute acids and water. The higher up a metal is in the reactivity series‚ the more reactive it is. In the experiment conducted‚ the three metals‚ magnesium‚ zinc and copper each had to undergo displacement reactions and reactions with water‚ oxygen and dilute acids‚ to arrange them in the order
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trafficking is finally being realized by many. There is an estimation of about 27 million people currently in slavery. Even though people are getting more knowledge on trafficking‚ perhaps they don’t know enough about it still. There are many articles about how millions of women and children are abducted a year into human trafficking. Trafficking can be defined
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Title Experiment 17 Reaction Kinetics- Determination of the Activation Energy of the Reaction Between Oxalic Acid and Potassium Permanganate. Objective To determine the activation energy of the reaction between oxalic acid and potassium permanganate. Theory and Background Activation energy is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport. In terms of the transition-state
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Article Reaction: Worried about strategy implementation? Don’t overlook marketing’s role Strategy implementation is at least as important as strategy development; indeed‚ most times strategies fail because they are not well-executed. According to Porter‚ all the elements of an organization’s architecture need to fit together in order to obtain a sustainable competitive advantage. In fact‚ competitors face stronger difficulties in imitating an array of interconnected activities rather than a single
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