acres in Alaska’s coastal plain 2. A wildlife reservation preserve‚ abundant with vast habitats and oil reservoirs B. Relevant 1. Drilling could possibly destroy the habitat and way of life for animals 2. It could also give the United States a 6 month supply of oil 3. Is the drilling worth it C. Thesis statement 1. The United States Congress should allow drilling in ANWR due to the economic‚ environmental‚ and social benefits we would get from doing so II. (Topic Sentence One-Economic Uprisings)
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PRACTICAL 7 TITLE : DETERMINATION OF ERYTHROSINE CONCENTRATION USING UV- VISIBLE SPECTROPHOTOMETER INTRODUCTION In chemistry‚ spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength. It is more specific than the general term electromagnetic spectroscopy in that spectrophotometry deals with visible light‚ near-ultraviolet‚ and near-infrared‚ but does not cover time-resolved spectroscopic techniques. Spectrophotometry
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Practice Density Problems Solve the following problems showing all your work including equations and units. 1. Calculate the mass of a liquid with a density of 3.2 g/mL and a volume of 25 mL. (answer = 80 g) 2. An irregular object with a mass of 18 kg displaces 2.5 L of water when placed in a large overflow container. Calculate the density of the object. (answer = 7.2 kg/L or 7.2 g/mL or 7.2 g/cm3) 3. A graduated cylinder has a mass of 80 g when empty. When 20 mL of water is
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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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Bilirubin is a breakdown end product of heme containing proteins. About 80% of bilirubin is formed from the degradation of erythrocyte hemoglobin after 120 days of erythrocyte life in the blood. The remaining 20% of daily-produced bilirubin is formed from erythrocyte precursors in bone marrow and other heme proteins: myoglobin‚ cytochromes‚ and catalase. Hemoglobin degradation begins with opening of the heme porphyrin ring‚ forming the biliverdin – iron – globin compound known as verdoglobin.
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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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Lab Report Density Name: Period: Problem How do you calculate Density? What units did you use for volume‚ mass‚ and density? When the cubes are placed in water which one will sink 1st? What is the ranking of the cubes lightest (1) to heaviest (10)? Is it true that the cube with the most mass will have the most density? Hypothesis I think the 1st cube was aluminum I think the 2nd cube was steel I think the 3rd cube was brass I think the 4th cube was copper I think the 5th
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