Bedenbaugh 4A Density Lab Objective : The purpose of this lab is to observe and explore the relationship of a substance’s volume vs. its mass‚ and to calculate an object’s density by using the relationship of its mass and volume. Data Tables : Data: Density of Water Run Mass of graduated cylinder volume of water added mass of water 1 25.28 g 0.00 mL 0.00 g 2 26.15 g 1.00 mL 0.87 g 3 27.18 g 2.00 mL 1.90 g 4 28.19 g 3.00 mL 2.91 g 5 29.13 g 4.00 mL 3.85 g 6 30.22 g 5.00
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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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Experiment 2: IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different
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Virtue ethics is relative There are different opinions and views within virtue ethics as to which virtues to follow and‚ more importantly‚ what makes a "Virtuous person" the contrast in opinions demonstrates the relativism of Virtue ethics. The doctrine of the mean does not work in practice It seems perfect in theory but as the statement claims‚ it is difficult to work in practise. The main area of failure is when/ how we know when we’ve gone to either extreme? This judgement amongst subjective
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Measurements and Density Objectives: A. To determine the density of Aluminum (lit. value = 2.7 g/cm3) by determining its mass‚ and measuring its volume by dimensional analysis and water displacement. We will also examine the % error in our determination based on the literature value. B. To determine the mass and diameter of select ball bearing. Plot graphs of mass vs. diameter‚ mass vs. surface area‚ and mass vs. volume. Afterwards use slop of the mass vs. volume graph to determine density. Procedure:
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Joshua Berkebile 8-26-10 1st period Density Lab The purpose of this lab was to find the mass‚ the length‚ the width and the height of 4 different cubes so we could calculate the volume and density of them. We also had to find the density of irregular shapes by dropping them into a graduated cylinder than subtracting the starting water volume by the ending water volume. Density is how much mass is in a certain volume of matter. Volume is the amount of room that an object
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1. DATA: Table 1: Density based on dimensional analysis Trial 1 Trial 2 Trial 3 Units Mass of sample 70.5466 70.5467 70.5465 g Dimensions of sample Length 4.98 4.98 4.99 cm Width 1.21 1.22 1.21 cm Height 1.21 1.22 1.22 cm Volum of sample 7.29 7.41 7.37 cm^3 Density of sample (based on dimensional analysis) 9.68 9.52 9.57 g/cm^3 Table 2: Density based on the displacement of water Trial 1 Trial 2 Trial 3 Units Mass of sample 70.5467 70.5465 70.5466 g Final
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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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Lab No.1: density‚ accuracy and precision Aim: to determine the relative precision and accuracy of different glassware items by calculating the density of a known substance. Introduction: the density of a substance is its mass per unit volume. (where P-density‚ m- mass and v- volume). Different materials usually have different densities and densities vary according to the pressure‚ temperature and purity of a substance. When measuring‚ there is always a small uncertainty or error and therefore
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Brief History of Relative Deprivation The “Relative Deprivation Theory” dates back nearly 65 years ago. Samuel Stouffer invented the notion of relative deprivation.(Pettigrew ‚ walker kitabı) Samuel Stouffer made a survey with American soldier in World War II. Survey’s results was improbable. According to the survey’s results military police more pleased than U.S. Army Air corpsman even though military police’s promotions were slower than U.S. Army Air corpsman’s promotions. Stouffer indicated that
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