Purpose The purpose of this catalase lab is to design simple experiments to demonstrate how various factors affect the rate of enzyme activity. This lab shows how the enzyme decomposes in hydrogen peroxide. Methods and Materials Refer to handout attached to the back of lab Observations Table 1: The mL of oxygen produced with increase of catalase 30secs 60secs 90secs 120secs 150secs 180secs Disks: 2 17ml 16ml 21ml 26ml 31ml 35ml Disks: 4 8ml 19ml 27ml 35ml 44ml 53ml
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chemical substance appears. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction: 2 H202 (aq) 4 2 H20 (l) + 02 (g) We can trap the oxygen gas created into a container thus showing the extent of the reaction and this will show the rate in which oxygen is created and how the rate will change when we use different initial concentrations. We do use a catalyst in this reaction to speed up the process and lower the activation energy needed to run
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Lab Report Abstract: The purpose of this lab was to see how magnesium reacts with oxygen. This reaction must be forced with heat. As magnesium changes to magnesium oxide the mass increased. Procedure: 1. Set up the stand and bunsen burne. 2. Go to crucible heat oven to obtain a crucible. 3. Weigh the crucible and lids mass. 4. Break up the magnesium ribbon on the crucible and weigh the mass of the magnesium‚ crucible‚ and lid. 5. Place the crucible on the ring stand over the flame. Allow
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Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
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Plants Which Produce Oxygen at Night‚ Debunked. Can some plants produce oxygen at night? I hear you ask‚ after all the internet is filled with articles stating that plants suck as snake plant‚ and some types of daisies and others produce oxygen at night. But remember your primary school science classes‚ when you learnt that plants practice a ‘magical’ process called photosynthesis? A plant needs light and water‚ to turn carbon dioxide into carbohydrates‚ and oxygen is the waste product of this
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Creating Acetylene Gas Introduction The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel‚ which leaves
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Produced by cell clusters in the pancreas called the Islets of Langerhans‚ insulin is a hormone that regulates glucose concentration in the blood. It is a protein synthesised and stored by beta cells‚ which secrete it in surges responding to changes in glucose levels. (Hardin‚ Bertoni and Kleinsmith‚ 2012) Fig 1. The Pancreas and Insulin |Source: University of Maryland (2011) | | |
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Lab Report Janice Chisholm SCI207: Dependence of Man on the Environment Instructor: Lee Ott April 28‚ 2013 1. What patterns do you observe on the information table 4? While observing the information in table 4‚ it appears that the number of fish changes from time to time and the oxygen increases and / or decreases when this occurs. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water?
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ID number: 56449 Due Date: 17/11/2013 Lab: 5 Topic: Production logging/Well testing Interval Fluid Content % of total production 7000’- 6960’ 100% oil 20% 6960’- 6915’ 80% water‚ 20% oil 50% 6900’- 6880’ 20% water‚ 80% oil 20% 6870’- 6850’ 100% water 10% 1. In order to obtain the above information‚ a series of logs must be run. The fluid content‚ percentage of each fluid at every interval and also the percentage of total production of the well can be acquired using the following
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active carbon-vanadium bond‚ which depends on substituent’s and complexing agents. HISTORY AND REGULATION OF PRODUCTION 2. HISTORY AND REGULATION OF PRODUCTION Throughout the later 19th century many chemists attempted to determine the makeup of natural rubber‚ with the goal of reproducing it. In 1860‚ the British chemist Charles Greville Williams analyzed rubber by destructive
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