Roy Levin Bio 11 Lab Dr.Izquierdo Analysis of Macromolecules in Tissue Homogenates of Bos taurusMaterials and Methods The homogenates provided were made by homogenizing tissues in a sucrose phosphate buffer in a 1:20 ratio. The protein concentration in bovine cells was measured by diluting the homogenate with a 1:5 ratio; 50 microliters of homogenate and 200 microliters of water. Then 5 known protein concentration samples which were 0.4‚ 0.8‚ 1.2‚ 1.6‚ 2.0 mg/ml of bovine serum were used to
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Introduction Table of Contents Introduction Materials Chemicals Equipment Safety Containers Measuring Devices Other Equipment Procedure Synthesis of Aspirin Crystalizing the Aspirin Recrystallizing the Crude Aspirin Finding the Melting Point Range Safety Precautions Acetic Anhydride Sulphuric and Salicylic Acid Heating Observations Mass of Aspirin Synthesized Melting Point Calculations Percentage Yield Maximum Yield Crude Product Final Product Melting Range Percentage
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Chemistry 12 Acetylene Lab March 8th‚ 2013 Hypothesis If the amount of gas is increase‚ it would have a fully combustion because it contains more carbon ions after the combination. Observation % of gas in the test tube ( approximately) % of O2 in the test tube (approximately) Black soot What kind of sound is produced? Trail# 1 70.00% 30.00% Yes (Whole test tube) “Puff” Trail# 2 50.00% 50.00% Yes “Puff” Trail# 3 10.00% 90.00% Few( head of the
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Lab Report 1 Introduction: Proper chemical formulas entitle many challenges such as the Law of Multiple proportions that states that there may be more than one plausible mole ratio for the elements in that compound. However if we determine the mass of each element in the compound we will be able to get the true chemical formula. In this experiment‚ we used the law of definite proportions to find the chemical formula for a hydrated compound containing copper‚ chlorine‚ and water molecules
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Geometrical Optics: Snell’s Law PHY101 Lab 12 Date: July 23rd‚ 2012 Objective: The purpose of this laboratory activity is to develop a set of experimental procedures that answer questions regarding Snell’s Law and the index of refraction. Ultimately‚ the experimental procedures you develop will allow the index of refraction to be found for water and cooking oil. 1. Explain how to experimentally determine the index of refraction of two substances. 2. Develop a set of experimental
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Place the beaker in your lab drawer. 6. Answer question #1 for tomorrow. Read and prepare a data table for Day II. DAY II 1. Using your forceps‚ carefully remove the fragile copper jacket that is left from the penny. Rinse it gently in distilled water. 2. Dry the penny in acetone solution. Swirl the penny in the solution. 3. Pour the acid solution from your beaker into the waste container at the center table. Rinse and dry your beaker. 4. Take a magic marker and write your lab drawer number on the side
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Bubble Inside a Bubble Materials • • • • • • • • Granulated sugar (we had our best results using Imperial Sugar and Dixie Crystals) Dish soap Water Tablespoon Scissors Pipette Cup Adult supervision Bubbles form because of a combination of water’s hydrogen bonds and the oily film you can see shimmer in the light. The oily film you see is actually two separate layers of soap attached to‚ and surrounding‚ hydrogen-bonded water. Solar Oven S’mores Materials • Pizza box • Two clear sheet protectors
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Materials: To complete all steps and smoothly complete the lab we first needed an almond‚ which what will be burned to find the energy and calories. Next we needed a paper clip to straighten out and put the almond on as a safe and efficient way to burn the almond. A scale and small aluminum-weighing dish were needed as well to weigh out the almond and paperclip. The lab also required a graduated cylinder‚ test tube‚ distilled water‚ thermometer‚ a Bunsen burner‚ a sparker‚ a calorimeter and safety
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in the 20% solution. 7. Average the molar masses you calculated in questions 3 and 6. 8. The formula for antifreeze is C2H6O2. Calculate its molarmass using the periodic table. 9. Calculate your percent error. Conclusion: This lab was a phenomenal success! The purpose of determining the freezing points of water‚ 10% antifreeze‚ and 20% antifreeze was not only accomplished‚ but also done so in a splendid manner. The net figures of our experiment were less than 5°C off from the
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Kyara Santos Lab Questions: 1.Describe some of the influence of Latin music in the US in the early part of the twentieth century.Latin music started a new type of music‚ Jazz and Afro-Cuban Jazz. 2.What was the significance of "Machito and His Afro-Cubans"? “Machito and His Afro-Cubans” created Afro-Cuban Jazz. 3.How did Dizzy Gillespie incorporate Latin music into his music? Gillespie invited a player named Chano‚ who was from Cuba‚ and they worked together. 4.What was
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