Analysis of a Chemical Reaction Purpose: To observe a chemical reaction and to use qualitative and quantitative evidence to identify this reaction from among four possibilities. Hypothesis: I think the result is going to produce water. I think this is going to happen because there is hydrogen and oxygen inNaHCO3. Materials: -Test tube clamp - 150 mm test tubes (2) - burner - retort stand - clay triangle - iron ring - crucible Procedure: Part A: 1. Add 0.5 g of NaHCO3
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weight of sample (g) – weight of ash (g) X 100 weight of sample (g) For sample A: % of ash = 2.2558 g-2.1987 g X 100 = 2.5313% 2.2558 g For sample B: % of ash = 2.0782 g-2.0249 g X 100 = 2.5647% 2.0782 g For sample C: % of ash = 2.5527 g-2.4859 g X 100 = 2.5709% 2.5527 g For average: % of ash = 2.2956 g-2.2365 g X 100 = 2.5745%
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32 48 13 32 48 14 32 48 Ratio: 48:32=6:4=3:2=1.5 Conclusion: Answer the following questions in complete sentences‚ giving detailed explanations and support for each of your answers. 1. Explain in your own words what it means for a chemical system to be in the state of dynamic equilibrium. After a reaction has occurred for awhile at a given temperature‚ the forward and reverse reaction rate will eventually be equal. Although you may get this confused‚ the concentration may not be
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Properties of Chemical Reactions Ms. Whitty‚ Science 10 Fiona Adams‚ November 1st‚ 2012 Introduction Chemical reactions are a part of our daily lives‚ from rusting metal to making bread to leaves changing colour in the fall. A chemical reaction is the process that occurs when two or more substances combine to produce a chemical change. When a chemical reaction takes place‚ the change is indicated by one or more qualitative properties. The colour or odor could change‚ gas could be produced
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1. Determine the spring constant‚ k‚ of Spring 1‚ by using Hooke’s Law. Take three different measurements (since 3 masses) and do three calculations and average your k’s to get a more accurate answer. By applying lots of friction‚ you will be able to get your mass to hang still. Show a table of your data and your calculations of k. Spring 1 with three different masses: 50 grams: Spring stretched: 5m F = 50gm * 9.8 m/s2 = 490.00 N K= 490/5m = 98 100 grams: Spring stretched: 10m F = 100gm * 9
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What makes a top 100 Hospital http://www.resource4pharmacymalpractice.com/negligence.html http://www.ccohs.ca/oshanswers/legisl/msdss.html#_1_1 What makes a top 100 Hospital Toi Lynn Santamaria DeVry University HSM310 online Professor Tammy Cagle What makes a top 100 Hospital The Cleveland Clinic is in the top 20 of the top 100 Hospitals. Its official
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Engro Chemical Pakistan Limited COMPANY PROFILE Engro Chemical Pakistan Limited is the second largest producer of Urea fertilizer in Pakistan. The company was incorporated in 1965 and was formerly Exxon Chemical Pakistan Limited until 1991‚ when Exxon decided to divest their fertilizer business on a global basis and sold off its equity of 75% shares in company. The Employees of Engro‚ in partnership with leading international and local financial institutions bought out Exxon’s equity and
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Experiment In this lab we were asked to observe changes and colors when mixing two or three chemicals together. The actual experiment itself used twelve different pipits and three chemicals I selected from my house. To begin‚ I first gathered everything‚ including the 96 well plate‚ 24 well plate‚ goggles‚ and gloves along with the observations of chemical changes bag. I set it up all on the the kitchen table that had paper towels on it. Next‚ I made my data table so that I could record my reactions
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regulatory issues‚ social concerns‚ competitive issues and demographic and geographic issues. I am also determine in seeing the impact of setting computerization on the food service and lodging operations within my state‚ particularly in the areas of reservations‚ accounting‚ personnel management‚ and the recording of sales transactions‚. In this we also discuss the factors like the ‚ I’m also going to consider the quality of technology infrastructure in my state and the degree of technology usage by potential
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100 Years of Yellow Color is omnipresent; we are educated about color‚ see it and use it every single day‚ and identify countless objects with it. Colors are prominent characteristics of our surroundings that may periodically go unnoticed‚ but are exceptionally significant in our everyday lives. The colors of streetlights and street signs are crucial to maintaining order‚ we are drawn to different things because of their colors‚ and artists produce masterpieces with combinations of colors. Gabriel
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