Conservation of Mass Lab Author: Aubrey Bryant Team Members: Elianna Chavez‚ Berkley BresemannDate of Experiment: Date Report Submitted: September 30‚ 2014 Instructor: Josh GeisingerClass: Chemistry Purpose: The purpose of this experiment was to use the Law of Conservation of Mass and the Law of Definite Proportions to determine the quantity of zinc chloride that is produced in a chemical change from a given amount of zinc. Background: We used two important laws of chemistry in this lab. Firstly
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Mass Wasting Lab 03/15/2014-03/17/2014 GEY 111 Abstract My objective for this lab was to take various soil samples and recreate mass wasting with the various samples. This will allow me to better understand how mass wasting works in our environment. I preformed this lab by pouring samples onto trays and tilted the trays to recreate a landslide. I kept notes and created tables for each step of my experiment. The results from my experiment was that saturated samples hold together better
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I. Purpose The purpose of this lab is to determine the molecular mass of a volatile liquid. II. Procedure • Place a cork with a small hole in it inside of a test tube and find the weight of the two together using a sensitive balance. • Pour 0.5 mL of the unknown volatile liquid into the test tube‚ insert the cork‚ and place the tube into boiling hot water while keeping the cork above water level. As the gas evaporates‚ excess gas will be released throughout the whole in the cork. Keep the test
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is molar mass calculated and why is it useful? You have to multiply the atomic weight of each element by the number of atoms that it contains in a compound. Molar mass is useful because its used to change a measurement of mass to an amount of a substance such as the number of particles. 2.Define a mole in chemistry and give 3 examples equivalent units that are used in chemical calculations. A mole measures the amount of a substance. Three examples that are equivalent to a mole is molar mass‚ 22
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The Effect of Different Molar Mass on the Diffusion on Substances Lunar-maius A. Gaerlan Group 2 Sec. X – 9l August 15‚ 2012 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using agar-water gel test. The agar-water gel set up was composed of a petri dish of agar-water gel containing three wells. Drops of potassium permanganate (KMnO4)‚ potassium dichromate (K2Cr2O7) and methylene blue(C16H18N3SCl) were simultaneously introduced to each well. Methylene blue
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Determining the Absorbance Maximum Wavelength and Molar Extinction Coefficient to Find the Molarity of the Unknown DCPIP Background Information: A spectrophotometer is an instrument used to help determine the absorption spectrum of chemicals. It does this by reading the absorbance of the chemical at different wavelengths. All chemicals absorb light in their own distinct way. This distinction helps to identify unknown chemicals. The absorption of light within a chemical is also very important because
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Melting Point Determination and Thermometer Calibration Lab Background: The melting point of a substance‚ a solid in this case‚ signifies the temperature at which the first crystal starts to melt until the temperature at which the last crystal disappears is reached. That being said‚ melting points are expressed in ranges‚ am organic compound will have a sharp range depending on the purity of the compound. Impurity of an organic substance will register an abnormal melting point based on its
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Experiment #1: Mass‚ Volume and Density Performed: 2/2/11 Turned in: 2/9/11 The purpose of this experiment is to verify the independence of X and Y motion for a projection. We watch the professor perform this experiment. The equipment used in this experiment was a projectile launcher (ME-6800)‚ a drop shoot accessory (ME-9859)‚ one photogate (ME-9204A)‚ white paper‚ carbon paper‚ two time-of-flight timing pad (ME-6810)‚ two balls (ball 1 and ball 2)‚ and an interface computer. Ball 1 is dropped
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Collecting Butane Gas The purpose of the lab was to determine the molecular mass of Butane‚ and this was done by using the ideal gas law (PV=nRT). The materials used were: match‚ funnel‚ bucket‚ cylinder‚ thermometer‚ lighter‚ scale‚ and a wooden flynt. These materials are used to help collect and test the Butane gas. Butane gas was used because it is ideal at standard temperature and pressure. Procedure: 1. Rinse bucket and fill three fourths full. 2. Rinse all glassware. 3. Place
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Name Date: Graded Assignment Meeting Needs Head On Answer the questions. When you are finished‚ submit this test to your teacher by the due date for full credit. (50 points) 1. After you have completed your research and examined first-hand accounts of people who lived through the Great Depression‚ write a detailed summary of your findings‚ highlighting at least three examples. Include information on these topics: The impact that the Great Depression had on the people you studied. For example: What
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