Investigation of the point of incipient plasmolysis of onion cells (Allium cepa) using NaCl (Sodium Chloride) concentrations of 0.1M‚ 0.2M‚ 0.3M‚ 0.4M‚ 0.5M‚ 0.6M Design Research Question (Aim): The aim of this lab was to determine the point of incipient plasmolysis of onion (Allium cepa) cells using Sodium Chloride (NaCl) concentrations of 0.1M‚ 0.2M‚ 0.3M‚ 0.4M‚ 0.5M‚ 0.6M. Hypothesis: When the water concentration of a solution outside the cell is lower than the concentration inside the cell
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Ragpa Group 8 2B Medical Technology Organic Chemistry Laboratory ABSTRACT The main objectives were to separate the colored components of malunggay leaves by means of column chromatography‚ as well as to determine the purity of the components using thin layer chromatography (TLC) and measure the Rf values of the colored components obtained herein. For column chromatography‚ the sample prepared was loaded into a Pasteur pipette plugged with cotton and uniformly packed with silica gel. The eluents
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# Now You See It – Copper Cycle Lab The purpose of the lab is to discover what happens when someone executes a series of procedures‚ beginning with copper metal. What is done | What is observed | 1. Started with copper‚ Cu (s). | reddish‚ brownish‚ orange-ish‚ powder-like | 2. Added nitric acid‚ HNO3 (aq). | acid turns blue and smells like chlorine. | 3. Added water‚ H2O (l). | stayed the same | 4. Added sodium hydroxide‚ NaOH (aq). | changed consistency‚ gel-like | 5. Heated the
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Electrostatics Lab Name: Bryan Michel Materials: Styrofoam cups Styrofoam plates PVC Pipe Fur Scotch Tape Procedures: You will be investigating charging object by friction. When you are asked to write your observations‚ please do so in a clear‚ complete manner. 1. Tape a piece of string to a Styrofoam cup and hang it from the edge of the desk so that it can move freely. Rub the outside of the cup with fur. Rub a PVC pipe with fur and bring it near the hanging cup.
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The study recruited HPS121 students to participate in a limited and extensive choice experiment in context to hotels. There were 661 participants‚ each chose one hotel and where then surveyed using six questions; three demographic and three in regards to difficulty‚ motivation and satisfaction using a 7-point Likert scale. The findings supported the hypothesis and were consistent with past research. Satisfaction and difficulty of choice showed a statistically significant difference with limited choice
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Exercise 8: Photosynthesis This exercise is worth a total of 15 points. To receive full credit for Exercise 8‚ you must submit the following: 1) The typed Exercise 8 report form‚ complete with all of your data recorded and questions answered. 2) A full scientific report for the Part I experiment that your group conducted. Use the supplemental guide to writing a scientific report to help you produce this report. Part 1: Does light matter? Table 8.1: Group and Class rates
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with a diffuser and stilling materials at the bottom to provide a constant head of water to be discharged through a bellmouth entry to the flow visualisation pipe. Flow through this pipe is regulated using a control valve at the discharge end. The water flow rate through the pipe can be measured using the volumetric tank (or measuring cylinder) of a Hydraulics Bench. Velocity of the water can therefore be determined to allow for the calculation of Reynolds’ number. A dye injection system is installed
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Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor
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flask and stopper • Weight Balance • Antacid tablet • Dilute solutions of o Sodium Hydroxide‚ NaOH(aq) o Iron(III) Nitrate‚ Fe(NO3)3 • Funnel • Cylinder Procedures 1. Put eye protection on for safety purposes. Part A: Reaction between Iron(III) Nitrate and Sodium Hydroxide. 2. Take two cylinders and fill one (full) with sodium hydroxide solution and other with Iron(III) nitrate solution. 3. Pour suitable amount (around 50 ml) of sodium hydroxide from the cylinder using a funnel into a Erlenmeyer
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Separation of the Components of a Mixture General Chemistry 1 (Chem 101)‚ ISP SCUHS Report 2 January 26‚ 2014 Abstract 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
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