faster the reaction between magnesium ribbon and the hydrochloric acid will be. This would be because there were more acid molecules to react with the magnesium ribbon. Increasing the concentration of the reactants will increase the frequency of collisions between the two reactants Hydrochloric acid + Magnesium Magnesium chloride + Hydrogen Preliminary results: Magnesium Acid 10 20 30 40 50 60 10 20 30 40 50 60 5cm 30ml 4 15 34 45 55 - - - - - - - 2cm 30ml 5 10 14 17 22
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66 | 12.8 | 12.89 | 12.95 | 13 12.4 | 12.63 | 12.76 | 12.85 | 12.91 12.4 | 12.63 | 12.76 | 12.85 | 12.91 pH of solution each time an increment of 5 ml of NaOH is added.30 | 35 | 40 | 45 | 50 * * * 06.05 Rate and Collision Theory: Assessment Instructions Investigation of the Rate of a Reaction Background: The reaction that you will be investigating is the reaction that occurs when an Alka-Seltzer tablet is placed into a given amount of water. Alka-Seltzer is an
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The Effects of Various Environmental Conditions on the Rate of an Enzyme Catalyzed Reaction Olivia Payne Mr. Kuninsky 10/10/14 Variables: 1. Substrate Concentration 2. Substrate volume 3. Temperature 4. Enzyme Volume 5. Enzyme Concentration 6. pH The independent variable my group addressed was temperature The conditions for temperature were 5°C‚ 24°C‚ 35°C‚ and 45°C We measured the independent variable using thermometers The dependent variable was the rate of an enzyme catalyzed reaction The
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companies wanted more information on deer vs. vehicle accidents. Many of these insurance companies funded a study in 2007 that was conducted by the Arkansas Road Commission‚ on deer collisions. Michael Farrell and Phillip Tappe‚ associated writers for The University of Arkansas‚ say that “the annual number of deer-vehicle collisions in the United States is estimated at >1 million‚ annually (Farrell and Tappe‚ 2727).” The damage totaling up from these accidents adds up to a whopping one billion dollars each
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safe for those that use them‚ and for those that may be in collisions with them. They create a crumple zone at the front of the car‚ install airbags within the car’s’ interior‚ and install seatbelts‚ actively campaigning about their use and benefits of using them. Newton’s Laws can very elegantly describe the forces at play here‚ and why they work to save thousands of lives every year. Firstly‚ the crumple zone allows for the collision to take a longer time to occur. This means that the acceleration
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customer/client knows what their need is Hyman/Chapter 2-Problem Formulation/Rev. 6/26/02 7 Recognizing the Need -Automobile Bumper Problem • Design an improved bumper for our new passenger car – There is too much damage to bumpers in lowspeed collisions Hyman/Chapter 2-Problem Formulation/Rev. 6/26/02 8
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of reaction‚ they determine how fast a reaction will occur. According to the collision theory‚ the rate of reaction depends on the frequency of effective collisions between particles. Every reaction is different in that they all require different conditions and factors in order to have the most effective collisions. However‚ the one thing that remains the same for every reaction is that the more effective collisions there are‚ the faster the reaction occurs. In this experiment‚ particle size
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follows Hooke’s law. The experiment consisted of two parts‚ the first part was done with springs hanging weights as well as the pulling down of a string attached to the spring for both individual and two springs. The second part was done with a collision cart and springs attached on both ends of the cart. The data obtained supported that simple harmonic motion obeys Hooke’s law as the spring value constants were all positive and the graphs displayed a positive slope. The percent discrepancy obtained
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were there any “early warning” reflector devices set anywhere near the truck‚ front or rear. 4. Phoenix permitted Carbonel to take home the truck‚ which was scheduled to be used the next morning. 5. Dionisio‚ upon seeing the truck‚ tried to avoid a collision by swerving to the left‚ but it was too late. His car smashed into the truck. 6. Dionisio suffered physical injuries‚ including permanent facial scars‚ “a nervous breakdown” and loss of two gold bridge dentures. 7. Dionision filed an action for damages
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Introduction When a substance is released into an area‚ the random movement of its molecules results in a multitude of collisions. These collisions‚ in turn‚ lead to a dispersion of the molecules. The overall movement of the molecules will be from an area of high concentration‚ where there will be more collisions‚ to areas of low concentration‚ where the number of collisions will be much less. This process of dispersion will continue until there is no net gain or loss of molecules in an area. The
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