Chemistry Lab Report Practical #1 Title: The Densities of Liquids and Solids Date: 29th of August 2014 Session: Friday 1 p.m. Student’s name: Alua Sarybay Lab partner’s name: Gulzhauhar Nurdildayeva Tutor’s name: Eugene Douglass Introduction The matter can be observed by determining‚ measuring and monitoring its chemical and physical properties. In this experiment the densities of liquids and solids will be determined. The density is an intensive property of matter that does not depend
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Discussion The purpose of the Density Lab was to determine the identity of four unknown solids and two unknown liquids by calculating their densities and comparing them to a density chart‚ taking into account error analysis and finally classifying the substances. In order to calculate this density‚ we first found the mass of the container that was to be holding the substances. We then found the volume of the substance‚ and lastly determined the mass of the container and substance. We subtracted
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Locomotion in an animal with an endoskeleton (fish) * Water has a higher relative density (800 times higher than air) and is a viscous medium to move through. * The body of a fish is of a streamlined shape to move quickly in water. * The streamlined shape of a fish: * a) is long ellipse tapering to a point (shaped like a torpedo) in the direction of the flow of water. * b) reduces the drag (a drag is water resistance caused by friction between moving water and the
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volumetric glassware should be calibrated to measure the volume that is actually contained in or delivered by a particular piece of glassware. The calibration is done by measuring the mass of water contained in or delivered by the glassware. The density of water at a particular temperature is used to convert mass into volume. Pipettes and burettes are calibrated to deliver specific volumes whereas‚ volumetric flasks are calibrated to contain basis. MATERIAL AND PROCEDURE The materials used
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to zeros. 3. Graph the volume and mass on an excel sheet to help determine the density of each plastic. The y-axis is the dependent and the x-axis is the independent‚ which in this case the y-axis is the mass and the x-axis is the volume. In the graph‚ add a linear trendline. Determine the slope to find the average density. 4. Once you have found the density for each known plastic‚ you will find the density of the two unknown plastics. First‚ use 50mL of water and place each plastic in the
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Dylan McFarland 9/15/14 Honors Chemistry Richardson Lab: Measuring the Density of Pennies Pre-Lab Questions: 1. The equation that relates density‚ mass‚ and volume is: density = mass / volume. 2. All substances have unique densities‚ so if you are able to find the density of a substance‚ you can properly identify it. 3. We measure irregular-shaped objects with the use of water displacement because it would be nearly impossible to get the exact measurements
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General ColleGe Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 a laboratory manual of small-scale experiments for the independent study of General College Chemistry 50-0125-CK-01 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on experiences. The laboratory manual included with a LabPaq
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water‚ at this point the water is dense enough for the egg to float. To find the density of salt water first measured the mass of salt water after adding salt into 800ml of water. The following results are the density of salt water every time increasing 1 table spoon of salt into 800ml fresh water. One table spoon of salt is also equal to 10g. Density = Mass Volume Amount of salt | Density of salt water | 0 spoon1 spoon2 spoon3 spoon4 spoon5 spoon6 spoon | 1.071.091.111
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LESSON 3: MOLAR VOLUME QUESTIONS 1. Calculate the density of the least dense gas‚ hydrogen‚ at 25⁰C and 101.3kPa. [0.083g/L] 2. Calculate the density of the densest gas‚ uranium (VI) fluoride (UF6) at 70⁰C and 25.0kPa. [3.09 g/L] 3. An unknown monoatomic gas X has a density of 5.37g/L at 25⁰C and 101.3kPa. Calculate the molar mass of the gas and determine its identity. [ 131.028g/mol; Xe] 4. Calculate the density of ammonia gas in grams per litre at 18⁰C and 100.4kPa. [0.706g/L] SCH3U0 Gases
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Oceans Answer the questions below. When you are finished‚ submit this assignment to your teacher by the due date for full credit. (6 points) 1. Use the graph to fill in the missing temperature‚ salinity‚ and density values on the table. Answer: Position Temperature (oC) Salinity (ppt) Density (g/cm3) A 20 35 1.024 B 25 34 1.023 C 15 35 1.026 (10 points) 2. Use the reference book to answer the following questions. Provide an explanation for the answers. a. In which zone can rooted plants be expected
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