Osmosis Lab Research Question: In this lab‚ our goal was to look at the effects of different sucrose concentrations on osmosis in potatoes. Our research question was “How do the sugar levels affect the rate of osmosis in potatoes?”. Background Information: Solutions consist of solutes dissolved in a solvent. In all living organisms there are many different types of solutes including salts and sugars. The major solvent is water. There are different concentrations of solutes in various regions
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amines‚ carboxylic acids‚ phenols as well as some neutral compounds. All three of these functional groups can be interconverted from non-ionic organic-soluble forms to water-soluble ionic forms by changing the pH levels. In the experiment done in this lab‚ a mixture of and a neutral compound and either an acid or base impurity will be separated by an acid-base extraction. The unknown compound will then be purified by recrystallization and identified by melting points. Experimental Discussion
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gov/audience/forstudents/9- 12/features/912_liftoff_atm.html# Advameg‚ Inc. (2007). Energy‚ Nuclear. Retrieved August 10‚ 2009‚ from Pollution Issues: http://www.pollutionissues.com/Ec-Fi/Energy-Nuclear.html Enron Corporation. (2000). Enron Annual Report 2000. Houston: Enron Corporation. Daou‚ L. H.-K. (n.d.). What is Heat and What Causes it? Retrieved August 10‚ 2009‚ from Cool Cosmos:http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_lessons/thermal/heat.html Electrical Pollution‚ Its
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Crystallization: Lab Report Theory/Introduction The purpose of this lab is to understand the concept of purification through crystallization. Crystallization is the process of purifying a substance‚ with the most adequate solvent. The process of crystallization came to be based on the principle of solubility. First‚ we must choose a solvent. The solvent is crucial to crystallization because it’s what will allow impurities to dissolve. Therefore‚ when selecting a solvent it is important that it
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CO2 Lab Report Intro Alka-Seltzer tablets are used to treat cold/flu symptoms as it produces CO2 when dissolved in water. The goal of this lab is to calculate the amount of NaHCO3 is needed to produce enough CO2 gas to fill the room. Experimental One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A
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STRUCTURE AND FUNCTION OF LIVING CELLS Name Answer the following questions as you work your way through the lab material typing in your answers. Then submit your completed lab report through the “Assignment” feature. This lab report is worth 50 points towards your final lab grade. Also‚ per the Honor Code‚ this work must be your own. CELLS Using your Biology Textbook answer the following questions. 1. What types of organisms are Prokaryotes? The Prokaryotes are organisms that are
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Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
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the opposite force (air resistance)‚ which is acting on the wings will get weaker because the wings will fold upwards. This will cause less for the air resistance to act on which will cause the speed to increase. Method: For our helicopter lab‚ we first measured two meters on the wall so we have will drop the helicopter at the same place. Then‚ Eliah will drop the helicopter and Holly will time how long it takes with the stopwatch. We repeated this step for three mores tests and with two
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IB Chemistry Experiment 4 Composition of a Post-1983 Penny Lab Report Background: Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. The experiment will be using HCl a strong acid to dissolve all the zinc inside the outer copper shell. The reaction follows as such; Zn+2HCLZnCl2+H2‚ but there will be no reaction with copper. The portion that will be measured is the mass of copper left after all of
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during the lab session Procedure Part A This lab was performed by the group members as they closed both low and high flow rotameters (Fig-2) and filled the tank with water. Then‚ the large rotameter was opened when the water in the tank had reached the internal baffle‚ so the flow from the tank was reduced by doing so. One member was in charge of adjusting the level of the water so it was always maintained over the baffle’s level during the lab (Fig-1). The first part of the lab was done
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