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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Reaction Paper 2 In the 4th chapter of “The Land Looks After Us” Martin starts by talking about a weather doctor that the tribe turned to for guidance after a total eclipse blocked out the sun. Though he was ill he helped and went into a trance which allowed his soul to find out what was going on. What he ended up seeing was a vision of god and all that neat stuff. After he became a prophet‚ I think what martin was trying to address with this story was that religion was not only spreading but
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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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9/11 Reaction Paper This movie documented a horrific day in American history‚ September 11‚ 2001. It was a beautiful day in New York City clear sunny skies‚ until 9:47 A.M when the 1st hijacked and plane crashed into one of the World Trade Center Towers. At first people thought it might have been an accident; but‚ at 10:31 A.M‚ another hijacked plane struck the other tower. At this moment people realized this was no accident‚ it was a terrorist act. Watching this documentary brings me back to
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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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REACTION PAPER OFR THE MOVIE “THE ISLAND” After watching movie “The Island”‚ which is all about cloning and how it affects the life of the real people‚ you can conclude from it if you’re pro or against cloning. The story start with the life of the clones whose like prisons that every little thing they do is under surveillance and they are not allow to talk with people in the opposite gender. They believe that when they won the random lottery‚ they can go to the island and can be free. They
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Reaction Paul Vergara IV-Diamond‚ PIQC verpaul_1@yahoo.com This Article talks about our former President Gloria Macapagal Arroyo’s Achievements which she did in her regime. Former President Gloria Macapagal Arroyo’s achievements about the economy‚ I am thankful for Gloria Macapagal Arroyo’s achievements for creating a flawless and awesome job for building and creating for giving employment to millions of people who were jobless In the Philippines‚ and also thanking her for creating a lot of
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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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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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