G. Y. S. Period: 6 09/11/12 Osmosis Lab I. Objective: The purpose of this lab is to put the solutions in chronological order from least to most molarity. If the solutions are hypertonic then‚ the water will go in and the order of the substances will be C‚ D‚ A‚ B‚ E. II. Materials and Methods: See attached page. Results: Table 1.1 III. Table 1.1 | Initial | Final | % Change | A | 11.4 | 11.86 | 4.03% | B | 11.67 | 15.33 | 33.68% | C | 10.84 | 11.86 | 9.4% | D | 12.02 |
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Our biology class has graduated from fruit to frogs. We were scheduled to do the frog unit in April‚ but the frog company delivered our victims on January 14. Pickled frogs have a way of disappearing from the storage closet‚ so today Ms. Keen armed us with knives and told us not to gag. David Petrakis My Lab Partner is thrilled--anatomy at last. There are lists to memorize. The hopping bone’s connected to the jumping bone‚ the ribbet bone’s connected to the fly-catching bone. He seriously talks
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allow an object to move is dissipated into heat energy and will not return to the system once the movement stops. Specifically‚ this lab will calculate the coefficient of friction. Unlike most coefficients in Physics‚ friction behaves differently depending on whether the object is at rest or at motion.
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(Staudt 80). In this lab‚ solubility in water‚ acidity‚ and odors of carboxylic acids will be observed. Also‚ esters will be produce and odors will be detected from the product. Finally‚ saponification will be learned. PROCEDURE: Carboxylic Acids and Their Salts: Characteristics of acetic acid: 2mL of water and 10 drops of glacial acetic acid was placed into a clean‚ dry test tube. Before
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(Photosynthesis Lab background)
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Diffusion and osmosis go hand-in-hand. Osmosis is generally the same as diffusion‚ however‚ deals solely with water. Osmotic pressure is the pressure of a solution against a semi-permeable membrane to prevent water from flowing into the membrane. In this lab‚ we are going to study tonicity; tonicity is the measure of this osmotic pressure and is the differential of pressure between two solutions separated by a selective membrane. To help identify the relative concentrations of solute particles of different
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Ciara Clark and Caroline Bedenbaugh 4A Density Lab Objective : The purpose of this lab is to observe and explore the relationship of a substance’s volume vs. its mass‚ and to calculate an object’s density by using the relationship of its mass and volume. Data Tables : Data: Density of Water Run Mass of graduated cylinder volume of water added mass of water 1 25.28 g 0.00 mL 0.00 g 2 26.15 g 1.00 mL 0.87 g 3 27.18 g 2.00 mL 1.90 g 4 28.19 g 3.00 mL 2.91 g 5 29.13 g 4.00 mL
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know that all organisms consist of basic units of matter called atoms. When atoms are bonded together they make up a molecule. Often associated with nonliving things are inorganic molecules‚ and associated with organisms are biomolecules. Today in lab‚ a series of tests were ran. Tested were the biomolecules of cells which are lipids‚ sugars‚ proteins and starch. The purpose of these tests were to test for the presences of cellular biomolecules. Some of the things that fat consist of are one glycerol
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Osmosis Rates in Artificial Cells Daniel George Department of Biology Grand Valley State University 1 Campus Drive Allendale‚ MI 49401 georged@mail.gvsu.edu Abstract The lab for this paper was conducted for the topic of osmosis‚ the movement of water from high to low concentration. Five artificial cells were created‚ each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic‚ hypotonic‚ or isotonic solutions for a period of 90
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cName: Nicholas Cassel Gen Chem 1210 23 March 2013 Blinded By the Light Abstract: In this experiment we were provided a cereal box spectrometer to observe the emission lines of noble gases and hydrogen. Based on the scale readings on the spectrometer and the Balmer-Rydberg formula‚ their wavelengths and percent error were able to be extrapolated. Based on the literature values‚ the cereal box spectrometer proved its value as a decently accurate spectrometer. Introduction: Every element
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