experiment is to determine the rate law and the activation energy for the reaction between persulfate ion‚ S2O82-‚ and iodide ion‚ I-: S2O82-(aq) + 2 I-(aq) 2 SO42-(aq) + I2(aq) The rate law can be written as Reaction rate = (1) Where m and n are the orders with respect to S2O82- and I-‚ respectively‚ and k is the rate constant. Determining the rate law involves determining the values of m and n. The temperature dependence of the rate constant is given by (2)
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pressure and heart rate differ when measured in a reclining position and in a standing position. When a person stands‚ the heart must pump blood against the pull of gravity to reach important areas such as your brain. Veins must work hard to get blood back to your heart. As a person reclines‚ the heart does not have to pump as hard to reach the same areas‚ decreasing the blood pressure. Also‚ a person is usually more relaxed in a reclining position‚ which slows breathing and heart rate. Less
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The Rate Of Photosynthesis: Lab report 1) Construct a graph of your data 2) Using the graph‚ estimate the time at which 50 percent of the leaf disks were floating on the surface. The point at which 50 percent of the leaf disks are floating will be you point of reference for future investigations Using the graph the estimated time that roughly 50% of the leaf disks were floating on the surface was around the 10th minute. At the 10th minute our number rose up to
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below is a free essay on "Water Scarcity" from Anti Essays‚ your source for free research papers‚ essays‚ and term paper examples. Current Event – Water Scarcity “US Intelligence says water shortages threaten stability” The US Intelligence report tells us‚ in opinion‚ that if in fact there is a shortage in water throughout the United States‚ it could trigger competition over the next decade. This competition would put United States‚ South Asia‚ and The Middle East in a situation because South
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WNS Series Horizontal Oil/Gas Fired hot water Boiler structure and advantages WNS Series Horizontal Oil/Gas Fired hot water Boiler which is fast-loading‚ internal combustion‚ three through and all wet-back tube boiler popular in Pakistan. In the first through‚ the flame and smoke will heat the thread barrel‚ then in the second though and the third though the inside water tubes will be heated again. At last‚ after disposing‚ the smoke will be discharged into the open air from smoke room to chimney
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The purpose of this practical is to investigate how the pulse rate of humans changes when they exercise. Someone who is physically fit can supply their muscles with enough blood‚ carrying glucose and oxygen‚ for an activity at a lower heart and breathing rate. The fitter you are the lower your resting heart rate. You and your classmates will be the humans investigated. SAFETY: If you know you have any condition that affects you doing exercise‚ please make sure your teacher knows before you start
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Swimming Pools or Hot Tubs: Which Should You Have? Swimming pools and hot tubs have always been an ideal addition to any home. They allow the household and their guests to cool off and loosen up‚ and add an instant spice to any house party. Repair and maintenance companies like Preferred Pool and Spa have no problem looking after and maintaining your pool or tub‚ should you plan to have one installed. Before that‚ however‚ you must figure out which suits your household and lifestyle better. Swimming
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------------------------------------------------- HOT ICE ------------------------------------------------- How to make own Sodium Acetate ------------------------------------------------- 1. Add 6 tablespoons of baking soda to a pot. Do not use baking powder. 2. Add 2 liters of white vinegar to the baking soda until it stops fizzing. Do this bit by bit to avoid spills and stir often. When the fizzing stops‚ the reaction is complete‚ leaving you a diluted solution of sodium acetate
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Thickening a hot sauce can be tricky due to the fact that many recipes contain high levels of acid. Acids can cause some thickeners to lose their thickening properties. Even so‚ there are quite a few options for giving your sauce more body without affecting its flavor. Reduction The simplest way to thicken any sauce is to reduce it. This means simmering it until moisture evaporates. The result will be a more concentrated and flavorful version of the sauce. This method is great for hot sauces as
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RATE OF REACTIONS. The reaction rate (rate of reaction) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place. For example‚ the oxidative rusting of iron under the atmosphere is a slow reaction that can take many years‚ but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second (right). Chemical kinetics is the part of physical chemistry that studies reaction rates. The concepts
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