NaCl‚ urea‚ glucose‚ albumin‚ powdered charcoal‚ and KCl. The step by step process was used by the software so that we could see the different kinds of reactions. According to the data found‚ we found that with high molecular weight compounds are too large to penetrate the molecular weight cut off pores and no simple diffusion can occur. So it seemed like the easiest way for a solute to pass through a semipermeable membrane was‚ if it either was small enough to pass or had some sort of carrier protein
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LAB ACTIVITY 1 MEASUREMENTS IN SCIENCE: MASS‚ VOLUME‚ AND DENSITY Purpose: The purpose of this experiment is find the density of two metals using their mass and volume. Introduction: The purpose of the experiment that was conducted was to measure and calculate the density of two different metals. Density is an important characteristic of a material. The density of an object shows how much mass is contained in the unit volume. To calculate the density of metals the experimenters had to find
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used in this experiment was very light‚ 20 balls were measured and the result was divided by 20 for better accuracy. This procedure was repeated for the sizes and the results are as follows: Diameter (mm) Mass (kg) 2 0.04 3 0.075 4 0.11 To find out the densities of the three balls‚ the following formula was used: Density= (mass of the ball)/(Volume of the ball)= mass/(4/3 π r^3 ) Density of 2mm ball = (0.04⁄1000)/(4/3 π 〖(0.001)〗^3 )=9551 kg/m^3 Density of 3 mm ball = (0.075⁄1000)/(4/3
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The controlled variable in this lab is the carrot and time‚ the manipulated variable is the salt solution‚ and the resulting variable in this lab is what happens to the carrot. Materials and Methods: . Salt solution ( 0-15%) . 4 Carrot pieces from same Carrot( Cut carrot in half if needed) . 4 Beakers . Water . Triple beam balance First of all you need to have water with salt‚ 4 beakers with the solution inside‚ you also need to find out the weight of the carrot when you put it on
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NANYANG TECHNOLOGICAL UNIVERSITY [pic] ANALOG CIRCUIT DESIGN LAB312 REPORT (S2-B4a-04) Student name: xxx Student no: xxx Group: xxx Date of submission: xxx TABLE OF CONTENTS 1. Introduction……………………………………………………….3 • 1.1 Background…………………………………………..3 • 1.2 The Capture Work Environment……….…………. 4 • 1.3 The PSPICE A/D Simulation Environment……… 5 • 1.4 Objective……………………………………………. 6
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Empirical and Molecular Formula | Key Concepts * Empirical Formula of a compound shows the ratio of elements present in a compound. * Molecular Formula of a compound shows how many atoms of each element are present in a molecule of the compound. * The empirical formula mass of a compound refers to the sum of the atomic masses of the elements present in the empirical formula. * The Molecular Mass (formula mass‚ formula weight or molecular weight) of a compound is a multiple of the empirical
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Human ECG Abstract The purpose of these lab exercises is to understand the function and importance of an electrocardiogram. This lab will demonstrate how stress levels or different elevations can affect human heart rate. Furthermore‚ the equipment used in the experiment will show the functions in the right and left arm; as well as‚ in the right and left ankles. Finally‚ the lab will serve a purpose as a way to know how to read an electrocardiogram and calculate the heart rate. Introduction
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Biology 101 Popcorn experiment Lab partners Robert Barham Michelle hall Diva Mancada Kelley Pritt 1 Introduction Popcorn‚ or popping corn‚ is a type of corn which explodes from a kernel and puffs up when heated. It is a popular snack food‚ especially in movie theaters. Popcorn can be salted or sweetened. Air popped popcorn is naturally high in fiber‚ low in calories and fat‚ contains no sodium and is sugar free. This can make it an attractive snack for people with caloric or
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There mass is measured and recorded then the yield is calculated. Introduction: Purpose: The aim of this experiment is to synthesize the common pain killer aspirin through an esterification reaction between Salicylic Acid and Acetic Anhydride; using sulfuric acid as a catalyst (4). Background: Aspirin is one of the
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The identification of acids and bases using a natural indicator Purpose: The purpose of this lab practice is to identify the pH of certain solutions and if they are acids or bases. Introduction: In chemistry‚ pH is a measure of the activity of the (solvated) hydrogen ion. p[H]‚ which measures the hydrogen ion concentration‚ is closely related to‚ and is often written as‚ pH. Depending on the pH solutions will be acids or bases. An acid is a chemical compound that dissociates in solution‚ releasing
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