Effect of different temperatures on the rate of an enzyme controlled reaction I will place starch and amylase into five water baths which are at different temperatures‚ and record the time it takes to break down the starch in the solution. Independent variables The independent variable is what I am going to change in my experiment. In this case it is the temperature of the water in the five water baths- 10‚ 25‚ 40‚ 55‚ 70 degrees Celsius Dependant variable This is what will stay the
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How does surface area affect reaction speed? The aim of this experiment was to investigate how the surface area affects the rate of a reaction in between calcium carbonate and hydrochloric acid. My hypothesis was that if the surface area to volume ratio of calcium carbonate was increased‚ then the rate of the reaction will increase because there are more particles that are accessible by the hydrochloric acid‚ thus more particles that can react with each other. Variables Independent- Surface
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Determining the Limiting Reactant and Percent Yield in a Precipitation Reaction Objectives: Observe the reaction between solutions of sodium carbonate and calcium chloride. Determine which of the reactants is the limiting reactant and which is the excess reactant. Determine the theoretical mass of precipitate that should form. Compare the actual mass with the theoretical mass of precipitate and calculate the percent yield. Materials: Balance 0.70 M sodium carbonate solution‚ Na2CO3(aq)
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Testing the effect of concentration on rate of reaction Plan: We are investigating the effect of nitric acid on calcium carbonate. We are doing this experiment‚ as we would like to understand the effect that acid rain has on limestone. We also want to understand how acid can have an effect on rate of reaction. The word equation for the reaction that will take place is: Calcium Carbonate + Nitric Acid Calcium Nitrate + Carbon Dioxide + Water The balanced symbol equation
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much more complex‚ and their disability is not all that they are. She also points out that everyone should be “accustomed to seeing disability as a normal characteristic‚ one that complicates but does not ruin human existence.” At the end of her essay‚ Mairs’ thesis states that “Achieving this integration‚ for disabled and able-bodied people alike‚ requires that we insert disability daily into our field of vision: quietly‚ naturally‚ in the small and common senses of our ordinary lives.” Mairs’
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In this story by Connie Jan Maraan‚ the protagonist of the story is a ghost who died when the Tayuman LRT Station suddenly collapsed and the train came falling down on his face. According to him‚ he has seen Christ because of that incident. -Summary provided by: images.1aot.multiply.multiplycontent.com/…/PHIL.LIT%20-… (first entry that appears in Google upon searching Ghost by Connie Jan Maraan) In Connie Jan Maraan’s story entitled “Ghost”‚ she applied various symbols to express what happened
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STATE OF THE NATION ADDRESS BENIGNO “NOYNOY”AQUINO lll President Benigno s. Aquino lll has just delivered his fourth State of The Nation address (SONA) at the session hall of The House of the Representatives‚ Batasang Pambansa Complex On July 22‚ 2013 Being a candidate and become President is very hard because he need to face and solve all the problems .He need to help people who are needed ‚ he need to response to the few question of people. For him being a president of the country is not
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civic works‚ medical practices‚ land development‚ promotion of education and of course‚ coming accross with his one true love‚ Josephine Bracken. The part of Rizal’s life where he came to know Josephine is the most romantic. Their love story was an example of unconditional love because despite of the fact that there were no priest who was willing to marry the them‚ the couple exchanged their vows before God in their own way. Their love bear its fruit - Josephine was pregnant. Unfortunately‚ Josephine
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Iodide The Analysis of a Chemical Reaction Introduction This experiment is based upon a discovery made through the isolation of PbI2 using a particular scientific method‚ which studies ratios of lead to iodine. Precipitation reactions occur when oppositely charged ions attract and form an insoluble ionic solid. This experiment examines the precipitation reaction between lead (II) nitrate‚ Pb(NO3)2‚ and potassium iodide‚ KI. Both are dissolved in water and the reaction between these solutes will produce
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immediately get the reaction paper written so I won’t forget my reading. Through this reading I learned sometimes that isn’t the smartest way to write a paper. It is very important to read actively and pay attention to what you are reading. I have been carried by the reading many times and never really thought about the purpose in depth. After reading this section of the text I have learned the importance of making sense of what you are reading. Sometimes you may read an article‚ essay or poem and take
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