Calorimetry: Enthalpy of Neutralization Introduction: The purpose of this lab experiment was to determine the molar concentration of the unknown HCl by using a coffee cup calorimeter. A coffee cup calorimeter is made of Styrofoam cups with a thermometer that is placed from the top and into the calorimeter to measure the temperature as the reaction happens. The Styrofoam cup used for the calorimeter creates an isolated system as it acts as a heat insulator between the cup and the surrounding
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Optimal Growth Conditions and Generation Time for E. coli Introduction The goals of these exercises were to determine the optimal growing condition and the generation time of E. coli. Materials and Methods Please refer to the lab manual for a complete list of materials. To determine the optimal growth condition for E. coli‚ we had to test the environmental factors that could affect the growth. We tested the relative growth of E. coli in the presence and in the absence of oxygen. The results
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Ventilation and Oxygen Consumption in Fish Sally Ming Bio 102- PR# 2 12/12/12 Abstract Goldfish (Carassius Autarus)‚ when subjected to warm temperatures will have a high rate of ventilation compared to those exposed in colder environment. In a class experiment‚ we observed and recorded the effects of water temperature at [25 C] warm and [15 C] cold on ventilation and consumption rates in goldfish. For one hour at 15min intervals we observed differences in both ventilation and consumption
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Colleen Hamilton AP Lab 4: Determining the Rate of Cellular Respiration of Peas at Varying Temperatures and Stages of Germination I. Purpose and Intro The purpose of this lab is to determine the rate at which germinating peas respirate at varying temperatures and stages of germination. Cellular respiration is the set of metabolic reactions and processes that takes place in an organism’s cells in order to create ATP from sugar. It occurs in the mitochondria and comprises three stages: glycolysis
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Unit 2 Writing Assignment 1 GE 150 Survey of the Sciences Unit 2 Writing Assignment # 1 Lord Kelvin Date Assigned: 6/25/13 Due Date: 7/2/13 The age old question‚ scientifically‚ of “how old is the earth?” goes back to late 18th- century. At the time most scientists either sided with Creationism or supposed as James Hutton theorized in Theory of the Earth
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I’m a of CABALA paper cup company. Now‚ I’ll introduce the advantages and after-sales service about our company’s unique designed paper cup. Let’s begin with the advantages of the new production—with handle paper cup. CABALA paper cup has six mainly advantages. Environmentally friendly‚ assures products‚ easy hand-held‚ multifunctional‚ product diversity‚ and the best production environment and the best production services. Let’s look at the environmentally friendly first. Our company’s
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My microclimate report of My Garden Microclimate is the climate of a small area within a larger area‚ my garden. I was given the task of investigating the microclimate of my garden and recording what I found. The warmest place was site 3 with a temperature of 13 degrees Celsius In site 3 there is a low albedo so heat is absorbed therefore the temperature is higher here on a warm day the aspect of this site is south west so this results in this part of the garden being warmer‚ because places facing
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Conclusion My hypothesis was if the temperature increases the Vitamin C content will decrease. The results indicate that my hypothesis was wrong; temperature does not affect the content of Vitamin C left in the orange juice. Future Considerations If I were to conduct this project again I would measure the temperature more accurately‚ conduct more trials‚ keep the juice at a high temperatures for a longer time and use another juice with a lot of Vitamin C content. The purpose of this experiment
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3. The various packaging methods of granulated sugar that is distributed in supermarkets is important to consider because of environmental factors‚ cost-efficiency and customer satisfaction. The consumer is paying for a product and it is the producer’s job to ensure the packaging is effective as well as protective. Two types of granulated sugar packaging methods I will analyze are paper-based packages and re-sealable plastic zipper bags. Paper bags are most commonly used in supermarkets due
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People are all carrying an umbrella when they step out of house as they cannot stand the blistering heat. This is caused by global warming‚ isn’t it? Global warming has resulted many negative effects and they are mainly caused by human activities. Hence‚ we‚ humans should stop global warming. Human activities produces 75% of annual carbon dioxide emissions. Firstly ‚the greenhouse gases has caused temperatures to increase. Since 1861‚ the average temperature has increased by 0.6 Degree Celsius
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