The Effect of pH on Enzymatic Reaction Rate Abstract Enzymes are affected by changes in pH. The most favorable pH value— the point where the enzyme is most active—is known as the optimum pH. This experiment was conducted to determine the effect of pH reaction rate on an enzyme‚ catalase‚ from yeast. The experimental results indicate that the catalase worked best at a neutral pH level of seven (7). Introduction An enzyme is a protein molecule that serves as a catalyst. “The basic function of
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students (first research)1 Simple reaction time4 Application of Weber’s law on visual perception6 Effects of unavailability of words in sentence based on Jean Piaget’s Cognitive Development theory9 Noel IsaacProf. Tira-tiraBS – Psychology Sat 7am-12nn Simple Reaction Time Introduction Time has been one of the most-debated mysteries ever argued. Some say time is a part of space in which we are living presently. Others speak of its ethereal nature—that is‚ time has been in one of the so-called
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reaction rates and concentration (research paper) By katie prestage what are reaction rates? The rate of reaction is the speed in which a reaction takes place. This can be measured by the rate in which a reactant is used up‚ or the rate a product is created. If a reaction has a low rate‚ it means that the particles are combining at a slow speed. If the rate is high‚ it means that the particles are coming together at a fast speed. For example‚ the rusting of iron through oxidation has a slow
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Assignment 2 Service Capability Due – Sep 23/13 Questions are 2 marks unless specified 1) A product market that is currently experiencing a change in customer preferences is vacuum cleaners. How are some companies in this industry responding to the changing preferences? What are some supply chain implications as it relates to the 4P’s? They change it’s design for the product they sell‚ like bag or bagless‚ and sell them in different places according to which place has most people favor bagless
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Purpose: The purpose of the ‘Rates of Reactions’ lab is to learn how to plan an investigative lab without outside help and to learn about the ‘Rates of Reactions’. This lab will require students to take responsibility for their own learning and use their prior knowledge to aid in the completion of this lab. In the lab prepared below‚ students will be learning about Rates of Reaction with varying concentrations of Alka-Seltzer with water. Hypothesis: I believe that the more water added to the canister
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Tabañag‚ Melissa seat#4‚3 MW 3-4:30 December 11‚ 2013 The Philippines of Rizal’s Times A Reaction By reading the title‚ you can now know what the article is about‚ the Philippines of Rizal’s time. During Rizal’s time‚ the Philippines was under the colonization of the Spaniards and their evil ways on ruling a country. The article technically states the kinds of evil things the Spaniards did which were (1) Instability of colonial administration‚ (2) corrupt officialdom‚ (3) no Philippine representation
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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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This lab focused on three factors affecting reaction rates‚ temperature‚ surface area‚ and concentration. Our first experiment (table 1) looked mainly into the effects of temperature on the reaction rate. To see how different temperatures would change the reaction rates we had three flasks all containing varying temperatures of water(H20). One with cold water (4°C)‚ one room temperature (21°C)‚ and one with hot water (44°C). In each flask‚ we dropped one tablet of Alka-Seltzer‚ all within 0.008 grams
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521 Exam I‚ Spring Quarter 7:30 - 9:00 PM‚ 25 April 2000 NAME 1. [10 points] What are the concentrations of HSO− ‚ SO2− ‚ and H+ in a 0.20 M KHSO4 solution? (Hint: 4 4 H2 SO4 is a strong acid; Ka = 1.3 × 10−2 for HSO− .) 4 2. [15 points] Calculate the pH of 1.00 L of the buffer 1.00 M CH3 COONa/1.00 M CH3 COOH (pKa = 4.74) before and after the addition of (a) 0.080 moles NaOH and (b) 0.12 moles HCl. (Assume there is no change in volume). 3. [10 points] The following reaction is found
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In Time Movie: Reaction and Reflection Paper When I watched this movie”‚ it really reflects me a lot because there are so many lessons I’ve learned. Even though it is a Sci-Fiction movie I had a great time watching it because I’ve learned many things on how we should spend our time wisely because I believe in the saying “ time is gold” that one should apply to his/her life. It teaches me to cherish most of your time with the most important persons in your life and don’t waste it. This is to when
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