Osmosis Experiment Subject: Professor Egg-avier Duration: 3 weeks (Oct 2nd – Oct 16th) Week 1 On October 2nd my group was giving a raw egg (weighing 58.8 grams) and placed it into a clear mason jar with 200mL of vinegar. The ph levels of our vinegar equaled a 2 which tells us that vinegar is a fairly acidic liquid. Once submerged in the vinegar‚ little bubbles began to appear around the egg’s shell. We believed this to be carbon dioxide escaping from the shell. We left our egg to sit in the
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where I divided its mass by its density to get its final volume so that I can create the perfect submarine for the experiment; final density of the submarine‚ where I added up all of the mass of balloon‚ pellets‚ and rubber band and divided by the volume of sphere so that I get the final density of my submarine and test if my submarine flow appropriately. The lab experiment on the identity of the unknown metals went well except that I have made a little bit of error on my calculation of the
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This part of the experiment yielded an exothermic reaction. The purpose was to calculate the specific heat capacity and molar mass of the zinc metal. The specific heat capacity was found to be 0.197 J/g °C with a percent error of -49.5%. The molar mass was found to be 127 g/mol with a percent error of 94.2%. Possible sources of error inherent to this segment of the experiment were the fact that when the temperature of the solution was being measured
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The effect of varying temperature on thee Rennin enzyme Abstract The purpose of this experiment was to see what affect different temperate had on the reaction rate of the enzyme rennin. The experiment was performed by placing test tubes filled with renin and milk into water bath which was heated or cooled to one of the temperatures trialed. The hypothesis justified because it found because it though data that the enzyme reacted faster with the 45° temperate because it was
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Solid State Cell Chemistries and Designs Sehee Lee Department of Mechanical Engineering University of Colorado at Boulder Crash‐Safe Energy Storage Systems For Electric Vehicles Workshop Denver‚ CO November 12 & 13‚ 2012 1 Outline History Basic theory (solid state electrolytes) SOA solid state batteries All-solid-state lithium secondary batteries Solid Power‚ Inc. 2 Why solid state battery? ? Advantages No flammable liquid electrolyte Ultimate safety No thermal runaway High
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EXERCISE 9 - Mechanical properties of solid and fluid mechanics 1. A stainless-steel wire of length 3.1 cm and a diameter of 0.22 mm. If it is stretched by 0.10 mm‚ find the tension of the wire. The Young’s modulus for stainless steel is 18 × 1010 Pa. 22 N 2. Determine the elongation of the rod i Figure 1 if it is under a tension of 5.8 × 103 N. Young’s Modulus: Copper‚ 11.0 x 1010 Nm-2‚ Aluminium 7.0 x 1010 Nm-2 1.9 cm 3. Air is trapped above liquid ethyl alcohol in
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Experiment # 8 Qualitative Analysis of Cations Objectives Part I: Separate a mixture of known cations: Pb2+‚ Fe3+‚ Al3+‚ Cu2+‚ and Ca2+ into individual ions. Perform a series of tests to become familiar with reactions characteristic of each cation. Part II: Separate and identify individual cations in an unknown solution containing a mixture of up to five cations. Use information gathered in part I to identify the cations. Introduction Qualitative analysis is a general name for the process
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BSED-IV Laboratory Experiment no. 2 The Living Plant Cell Objectives: * To study the different types of plant cells. * To observe plant cells as to their shapes‚ structures and function. Materials: Microscope cover slip glass slide water onion Iodine soln. hydrilla salt tomato razor blade Medicinal dropper epidermal tissue of rhoeo-discolor Procedure: 1. Onion Cell 1. Prepare an onion bulb 2. Place a drop of water
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not change color so an additional 0.5 mL of reagent was added and allowed to mix for five more minutes. This process was repeated again and at 40 minutes the reagent was in excess. The reacted mixture was then added to a beaker containing 10 mL of saturated sodium chloride and a small piece of ice. This mixture was then separated equally into two centrifuge tubes where 3 mL of diethyl ether was then added. After gently shaking and venting the centrifuge tubes the bottom aqueous layer was extracted and
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There are only five platonic solids and the name of each shape comes from the number of faces it has.The five platonic solids are tetrahedron‚ octahedron‚ cube‚ icosahedron‚ and dodecahedron. Each solid is made of regular polygons and the polygons of each solid are congruent. The topics that will be discussed in this paper are what are the five platonic solids‚ who classified the five shapes‚ their key features‚ the shapes similarities and differences‚ and examples in real life. The first
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