Egg Lab Write Up The purpose of this lab was to depicked the many properties of diffusion such as isotonic‚ hypotnonic‚ and hypertonic‚ so that students could have a clear visual example to go by for future refrences. We also did this to learn about selective permeability and osmosis. Our original hypothesis stated that the vinegar would react with the calcium in the shell to create CO2 bubbles. Note I said the original hypothesis as this experiment took coarse over a four day period‚ in which
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09/2/2014 Course and Section Number: SCIN131 Lesson 1 Lab: Laboratory Safety & Differences in Density due to Temperature PART 1 Begin by viewing the following Thinkwell video 15.1.1 CIA Demonstration: Laboratory Safety After you watch the above video‚ check out the safety contract at http://www.flinnsci.com/Documents/miscPDFs/Safety_Contract.pdf and then answer the questions below in sufficient detail: (a) (1 pts) Describe some general lab safety rules that were discussed in this video and reading
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The Great Antacid Culminating Lab Purpose: To determine which antacid tablet is the most effective. Materials: 3 different antacid tablets‚ thymol blue‚ droppers‚ pH probe and necessary cables‚ pH probe holder‚ retort stand‚ 1 mol/L HCl‚ droppers‚ five 150 mL beaker‚ mortar and pestle‚ graduated cylinder‚ balance‚ weighing dish‚ stir rod Procedure: 1) Gather all the equipment you will need to do the lab. You will be working in groups of 3 2) Calibrate the pH probe as you practiced the day
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Enzyme Activity Lab Hypothesis: 1] Are enzymes reusable? Yes‚ enzymes are reusable. 2] Which of the following do you think contain catalase? [Manganese dioxide‚ chicken meat‚ apple‚ carrot‚ potato‚ or chicken liver] I think that the manganese dioxide‚ apple‚ and carrot contain the catalase. 3] Would grinding the materials affect enzyme activity? I think that grinding the materials will increase enzyme activity. 4] Would temperature affect enzyme activity? I think that
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The analyses of mixture were to distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these techniques‚ we examined our solutions such as SiO2 (sand)‚ NH4Cl (ammonium chloride)‚ and NaCl (sodium chloride) and mixed H2O (water) with each solution after being heated. After examining our solutions‚ we made calculations by finding the percent mass of each solution once the experiment was completed. In our findings‚ we were able to determine
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CHM130 Lab 6 Exploring Density Name A. Data Tables Place your completed Data Tables here Part IIIa (3 points) Volume of water in graduated cylinder (mL)10 mlMass of rubber stopper (g)11.15Volume of water and rubber stopper (mL)16.5 Part IIIb (6 points) Volume of water in graduated cylinder (mL)20Mass of iron nail (g)3.66Volume of water and iron nail (mL)20.5 Part IV (20 points) Type of Aluminum FoilMass (g)Length (cm)Width (cm)Volume (cm3)Thickness (cm)Regular.63g15 cm 10.02 cm.21 cm3.0014
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Measurement and Density Your Name: ____________________________________________________________ __ Purpose of this Lab What is the goal of this lab? What question are you trying to answer‚ or what problem are you trying to explain? Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about each experiment: Experiment 1: Which method of finding the density give you the least percent error and why? Experiment 2: After completing the
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Digestion Lab Abstract – The purpose of this lab was to understand how different solutions played a role in the digestion protein. By looking at different variables‚ such as temperature‚ and pH we’re capable of understanding just how certain substances functioned and when they didn’t. The data for all labs are clear and concise and give a clear understanding of what solutions work best. All three labs were placed in a warm water bath set at 37’C to stimulate the reaction as if it were taking place
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document to report your findings from the EvolutionLab Exploration Experiment. The lab report consists of three sections: Data‚ Exploration‚ and Lab Summary. Data: copy any data‚ graphs‚ charts‚ or notes that you have saved in your EvolutionLab online notebook into this section. Exploration: Answer the questions. The questions in the Exploration section are the same questions in your EvolutionLab instructions. Lab Summary: Write a 100- to 200-word summary. Data To copy your data from your
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Irresistible? By Elizabeth Potter December 5‚ 2012 Lab Section 503 Abstract The over all goal of the Irresistible lab was to verify a buffer’s ability to resist changes in pH with consecutive 1mL additions of either a strong acid (HCl) or base (NaOH). The experiment entailed preparing a combination 10 buffered and non-buffered solutions and then monitoring the pH changes as a strong acid or base was added to the solution. By performing this experiment‚ it was found that with increasing amounts
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