Five-Layer Density Column A density column consists of layers of liquids of different densities which do not mix with each other‚ and which are clearly distinguishable from each other. The highest density material is at the bottom of the column‚ and as you proceed up the column‚ the density of each successive layer decreases‚ with the lowest density layer on top. Three methods for construction of a five-layer density column are discussed in this write-up. All methods use the same five liquids. •
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Comparing the Density of Metals Question: What is the effect of changing the type of metal on its density? Hypothesis: If a different metal type is used‚ then the density will change. Materials: 4 metal samples Balance 50 ml graduated cylinder Water Paper towels Apparatus: Pre-Lab Questions: 1. What’s the formula to calculate density? D = M / V
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SCIENCE Density Calculate density‚ and identify substances using a density chart. Density is a measure of the amount of mass in a certain volume. This physical property is often used to identify and classify substances. It is usually expressed in grams per cubic centimeters‚ or g/cm3. The chart on the right lists the densities of some common materials. EQUATION: Densities of Substances Substance Density (g/cm3) Gold 19.3 Mercury 13.5 Lead mass density ϭ ᎏ volume
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Beverage Density Lab 1. Beverage Density Lab 2. Purpose: To find the different densities when there is a certain amount of sugar is added in water. 3. Materials: 1) A 100 mL beaker 2) Coconut Water 3) Powerade 4) Scale 5) Pipet 6) Sugar referred solutions (0%‚ 5%‚ 10%‚ 15% and 20%) 4. Procedure: 1) Get an empty 100 mL beaker and weight it on a scale. Make sure the sale is zeroed out. 2) Use the pipet and draw out 10.00 mL of 0% distilled water into the beaker. 3) Record
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____________________________ http://phet.colorado.edu/en/contributions/view/3350 Buoyancy and Density Activity Directions: Go to the following website to use an interactive simulation to work with buoyancy and density. http://phet.colorado.edu/sims/density-and-buoyancy/buoyancy_en.html Procedure: Getting Familiar 1. On the Intro screen‚ mess with the apparatus‚ changing the blocks‚ observing what happens when the mass‚ volume and densities are held constant. 2. Check and uncheck the boxes under “Show Forces” to see
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Density of Metals Problem: How does the mass and volume help determine the density of known metal samples? Hypothesis: When comparing the density of Zn(zinc) and Cu(copper)‚ you will find that Copper is more dense than Zinc. You can test this out by using the density formula D=m/v. Materials: * 2 metals (options: zn‚ al‚ or cu) * 3 samples of each metal (small‚ medium‚ and large) * Scale/Balance * Calculator * Water * Graduated Cylinder Safety: * Be prepared for your
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report 1: Density Purpose: The purpose of this lab was experimentally determining the familiarization between volumetric and gravimetric using common equipment. Procedure: Equipment: Objects for density determination – a metals‚ and Teflon ball 50 mL graduated cylinder 100 mL graduated cylinder 50 mL beaker Electronic balance Calcaulator Water Ammonium sulfate Step: Part 1.Measurment of the density of a solid 1. Three metal objects were selected for density determination:
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. DISTRIBUTION CHANNELS BIBLIOGRAPHIC REVIEW António Abílio da Silva Couto‚ nº 5195 Cidália Martins Domingues‚ nº 5115 Joaquim Luís Sousa Pereira‚ nº 5194 Paula Marisa da Silva Lima Ferreira‚ nº 5100 Paulo José Branco‚ nº 5198 This work was oriented by Dr. Francisco Coelho ABSTRACT: Deciding for a distribution channel is probably one of the most important actions a marketer has to take in his career. In this work we identified the main distribution channels‚ the external factors that should
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Statistics: • Science of gathering‚ analyzing‚ interpreting‚ and presenting data • Measurement taken on a sample • Type of distribution being used to analyze data Descriptive statistics: Using data gathered on a group to describe or reach conclusions about that same group only. Descriptive statistics are the tabular‚ graphical‚ and numerical methods used to summarize data. Collect‚ organize‚ summarize‚ display‚ analyze Eg: According to Consumer Reports‚ General Electric washing machine
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Report of Density Determinations Density is defined as the mass of substance per unit volume. Both pure substances and solutions are applicable. Today we are going to determine the Density of rock chunks and NaCl solution. In this experiment‚ we will determine the mass and volume of each object and then we will calculate the ratio—the density. In the first part of the experiment‚ we should measure the density of some irregularly shaped chunks of rock. The Weight of rocks is 18.769g
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