Photography Write-Up: Separation The camera I use has been rented from the ERC on a regular basis‚ and is a Canon 600D or 700D. The photo’s i’ve captured for this project were shot on the standard lens‚ with a variety of settings. I also often use a mini LED light with a daylight filter in order to create more depth in the shadows in my images‚ I usually place this somewhere away from the camera in order to create angled shadows instead of images being frontlit. To start this project‚ I experimented
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CHEM 101L GENERAL CHEMISTRY LAB FALL 2012‚ Friday 1:00 PM-3:50 PM Professor: Dr. Rostislav Bukasov Office: 7107 Office hours: Monday 5:00-6:00 PM; Tuesday 9.00-10.00 AM; Wednesday 11:00 AM–12:00 PM; Thursday 4.00-5.00 PM; Friday 10.00-11.00 AM Phone: 7-7172-706665 E-mail: rostislav.bukasov@nu.edu.kz Teaching Assistant: Zhanar Kassenova E-mail: zhanar.kassenova@nu.edu.kz Office : 8527 Office hours: Tuesday: 11.00 - 12.00 pm; Thursday: 9.00 am - 10.00 am Course Overview Chemistry
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Catalysts are substances that increase chemical reactions while using less energy. They also remain unchanged after use‚ which enables it to be used repeatedly. Cells have special catalysts called enzymes‚ which are specialized proteins that help accelerate chemical cell reactions. (Evert‚ RF & Eichhorn‚ SE 2013). Enzymes also control plant metabolic processes such as respiration (Evert RF‚ Eichhorn SE & Perry JB 2013). This experiment focuses on the enzyme catalase. Catalase breaks down hydrogen
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Physics SL Sam Edgecombe 2012.04.22 D‚ DCP‚ CE Paper Helicopter Experiment Introduction: The paper helicopter experiment involves designing a paper helicopter and by changing a certain variable acquire data for a selected variable. The essential part in this practical is to plan the experiment in detail in order to obtain substantial data. Firstly we have to identify our controlled variables which will be kept constant throughout the experiment. By carrying out this practical it is ideal that students
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Purpose: The purpose of this experiment was to calculate the mass of composition of each component in a mixture containing sand‚ salt and iron filings. Introduction: Many substances that we use on a daily basis are in fact part of a mixture. A scientist separated a mixture to obtain the specific substance that was in need. Many of the compounds and mixtures today are not found in its pure form‚ but in mixtures. Many scientists have the impression that separating mixtures is an important part of
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Experiment 1 Cyanobacteria Oxygen Production Through Photosynthesis Date Performed: September 2‚ 2014 I. Introduction a. Background Cyanobacteria or blue green algae are renowned for their tolerability and susceptibility even in wide range of environmental conditions‚ a characteristic of many primitive organisms. CNB are believed to be the agents of autotrophic origin of life thus they probably represent the survivors of the earliest photosynthetic plants‚ along with photosynthetic and chemosynthetic
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Abstract The Tuskegee syphilis experiment was an infamous clinical study conducted between 1932-1972 in Macon Country‚ Alabama by the U.S Public Health Service. The purpose was to study the natural progression of untreated syphilis in rural African American men who thought they were receiving free health care from the U.S government; about four hundred African American men were denied. The doctors that were involved in this study had a shifted mindset; they were called “racist monsters”; “for
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1 English 1013 10/18/10 In nineteen sixty-three‚ Stanley Milgram conducted an experiment on obedience to authority figures. It was a series of social psychology experiments which measured the willingness of the study participants to obey an authority figure who instructed them to perform acts that conflicted with their personal conscience and confronted them with emotional distress. The experiment resulted in twenty-six out of forty of the participants administering the final massive
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Topic: Osmosis Materials: Potato cylinders‚ 20 percent sodium chloride solution‚ three test-tubes‚ test-tube rack‚ scalpel blade‚ Gel ink pen‚ syringe-10cm^3‚ Plastic ruler with mm‚ tile‚ forceps filter paper‚ Masking tape. Method: 1) Three test-tubes‚ A‚ B and C were labeled and initials of experimenters were applied with the date: January 29‚ 2013. 2) A syringe was used to put 10cm^3 of water in tube A and 5cm^3 in tube B along with 5cm^ 20 percent sodium chloride solution and 10cm^3 20 percent
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Introduction The major component of eggshells is calcium carbonate (CaCO3). Calcium carbonate cannot be dissolved in water‚ but can dissolve in an acid using the reaction: 2HCl(aq)+CaCO3(s) Ca2+(aq)+CO2(g)+H2O+2HCl-(aq) This reaction is not used to titrate the CaCO3 because it is very slow when the reaction is close to the endpoint. Instead adding an excess of acid to dissolve all of the CaCO3 and then titrating the remaining H3O+ with NaOH solution can achieve the determination of the amount
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