efficient at absorbing water in cucumbers. The independent variable is the different substances being used. The dependent variable in the experiment is the amount of water absorbed. There are many constants including the same brand of cucumber slices‚ the same amount of each substance applied‚ the same measuring tools being used‚ and the same observation time. The control of these scientists’ experiment is no substances applied. The Scientists have hypothesized that if salt‚ sugar‚ baking powder
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IB Chemistry Experiment 4 Composition of a Post-1983 Penny Lab Report Background: Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. The experiment will be using HCl a strong acid to dissolve all the zinc inside the outer copper shell. The reaction follows as such; Zn+2HCLZnCl2+H2‚ but there will be no reaction with copper. The portion that will be measured is the mass of copper left after all of
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Patient Number Glucose test (test strip matches key on bottle) Amino acid test (with biuret turns purple) Urea test (with‚ 5 grams‚ urease + phenolphthalein turns pink) Salts test (with silver nitrate turns to a white solid) 1 - - + - 2 - + _ + 3 + + + + 4 - - + + 5 + - + + Normal key Glucose – Amino acid – Urea + Salts + Patient number 1 had normal results except for the urea test. Patient number 2 tested negative (-) for glucose and urea tests and
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Calorimetry Lab Report Waris Butt PHY 112 Mr. Fasciano Class #18336 06/08/14 Purpose: Heat flow will occur between objects in contact until no more heat flow is detectable. Using calorimetry to analyze heat flow quantitatively and the equation: Q = mc ΔT‚ to determine the specific heat capacity of an object and heat flow from or to an object; respectively. Materials: Circle K 44 oz Styrofoam cup with lid Large Plastic
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SCIE211 Phase 2 Lab Report Title: Speciation Instructions: You will need to write a 1-page lab report using the scientific method to answer the following question: • What would happen if a species within a population were suddenly split into 2 groups by an earthquake that creates a physical barrier like a canyon? When your lab report is complete‚ post it in Submitted Assignment files. Part I: Use the animated time progression of speciation to help you write up your lab report. Part II: Write
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ROLL 9 ISLOM JALOLOV 12/21/2011 LAB REPORT ROLL 9 ISLOM JALOLOV EGG LAB REPORT PURPOSE: WHICH IS MORE PERMEABLE SALT WATER‚ VINEGAR‚ OR CORN SYRUP APPARATUS: STRING‚ RULER‚ E-BALANCE‚ 250 ML BEAKERS‚ PEN MATERIALS: EGG‚ WATER‚ SALTY WATER‚ CORN SYRUP‚ VINEGAR INTRODUCTION: I AM DOING A LAB REPORT ABOUT EGGS‚ I’M USING SALTY WATER‚ VINEGAR‚ CORN SYRUP‚ AND I AM GOING TO TRY TO FIGURE OUT WHICH IS MORE PERMEABLE THAN ALL. REALISTIC STATEMENT: YES MY RESULTS ARE REALISTIC PROCEDURE:
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Ph Lab Report Bryon Kim 123013 B(2) Biology Background information/Research PH paper (litmus paper) determines how acidic or how basic a substance is. The paper changes color accordingly to color code on the pH scale. The pH scale starts from 0 to 14. The lower the number the more acidic it is. Zero is the most acidic‚ and 14 is the most basic while 7 is the neutral number for example water. Examples of an acid is lemon juice or multi purpose cleaner. Examples of a basic substance is shampoo or liquid soap
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Bio Lab Report Erica Patterson September 10‚2013 Intro to cellular and molecular Biology Lab Abstract: In the Biology Laboratory Manual by Darrell S. Vodopich and Randy Moore are results to a similar experiment. The studied the hypothesis of carbon dioxide production by yeast fed sugar is not significantly different than the carbon dioxide production by the yeast fed in protein. Their hypothesis is the one that has helped formulate ours. We also will be answering the same to questions “What
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Alhia Harris October 18‚ 2011 Biology Lab report Proteins are very important throughout the body. They have a lot of functions in cells. Antibodies are proteins that help cells rebuild the cells when they are destroyed. Transport proteins move substances from one place to another. Regulatory proteins control cellular metabolism in a way that cells throughout the body can have the right amount of glucose in the blood. A common protein is an enzyme; in cells they speed up chemical reactions. For
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technique is: Number Moles Concentrated Solution = Number Moles Dilute Solution. An instrument called a spectrophotometer detects the amount of light that passes through the sample and the percent transmittance can be recorded from the meter. In the lab‚ multiple homogeneous solutions are made. There was not a way to determine the differences in concentrations‚ but the Spec 20 made it possible to measure the difference. The Beer-Lambert Law is a graph used to record
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