Lab‚ Week # 1 BALANCE LAB Introduction The purpose of this lab is to learn how to utilize two different balances to find the mass of different chemicals in the ChemLab program. A balance is an instrument used to determine the mass of a chemical. To accomplish this we use direct weighing and weighing by difference on both the centigram and electronic balances. Equipment 1 Centigram Balances 1 Electronic Balance 1 100ml Beakers 5 Copper Slugs 2 Unknown Weights (Label # 1‚ # 2)
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Precision: Balance Lab Worksheet Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure Access the virtual lab and complete the experiments. Data Below is the table that you will complete for the virtual lab. Either type your results into this table or print the table from the virtual lab (it must be submitted to receive full credit for this assignment.) To print from the virtual lab. Be sure the data
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Momordica charantia L. Extract as a Prophylactic Medicine for Gram-Negative Bacteria Escherichia coli Proponents: John Rovic P. Ngo Lester T. Almarez Trisha Mae N. Reyes August 2013 In Partial Fullfillment of the Requirements in Research II-B Momordica charantia L. Extract as a Prophylactic Medicine for Gram-Negative Bacteria Escherichia coli A Science Research Project Presented to The Faculty of Science and Technology Mr.June Hayden Sinson Research Adviser
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of 3 samples of water with various amounts of solute after the use of osmosis. Three different tests were performed‚ each with a beaker of water containing varying amounts of starch from 30% concentration (12.5 grams of water) to 15% concentration (9.5 grams of water)‚ and then 0% (10.5 grams of water). To start this experiment‚ we put water into a make-shift dialysis tube‚ a type of semi-permeable membrane tubing made from regenerated cellulose (Wikipedia). We then tied each end of the dialysis tube
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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detrimental. The purpose of this lab is to
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he started working for the Pesmen-Rubin Commercial Art Studio where he was employed as an illustrator. Shortly after working there‚ he met an artist and together they formed a new company. After this partnership ended‚ Walt Disney created Laugh-O-Gram Studios because he wanted to lengthen his short films. When that company became bankrupt‚ he joined together with his brother Roy‚ and created Walt Disney Studios. Throughout being a part of all of these companies‚ he has created amazing things. Walt
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Group number or mass of the beetle Dependent variable- How much mass it could pull Controlled Variable- Health of bug‚ size of petri dish‚ how far to the darkness Control Group- No control group Group Number Mass of beetle in grams Number of pennies pulled Actual mass pulled Pulling power 1 1.73 10 42.79 24.73 2 1.63 7 25.42 15.6 3 2.22 9 29.28 13.19 4 1.51 6 22.7
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Michael Castelli Keegan Bauman Potato Lab Dr. Peano Block 1 Introduction: Potatoes are just your average food; they have been around for as long as the human race can remember. In this lab we will make them be a prime example of osmosis‚ which is a transport mechanism. In this lab the problem being tested was what environment affects the mass of the potatoes the most. The independent variable is the environments used salt‚ water and iodine solution. The dependent variable is the mass of
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General College Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 A Laboratory Manual of Small-Scale Experiments for the Independent Study of General College Chemistry 50-0123-CK-02 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on the intellectual properties associated with the LabPaq’s
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