Every step in this experiment has reasons behind its application. One determines the masses of the crucible and barium chloride hydrate for obvious data collection and calculation purposed. The heating of the sample slowly for 10 minutes is done to remove the water from the sample. A constant mass for the sample must be obtained so therefore it must be done slowly because if not you may loose mass from the sample. At the point where the crystalline solid changes to a powdery solid the sample must
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Results and discussion: I. a. How would you compare that relative reactivity of Na and k -Sodium and potassium react somewhat similar when reacting with water however they are slightly different. Sodium moves because of the hydrogen coming off of it and has a low melting point while potassium’s reaction is faster and enough heat is produced to set light to the hydrogen coming off of it. Each leaves a pink color hue in the water. Discuss the similarities and differences in the behavior of the metals
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Redox potential – CV Acetonitrile Adjusted sensitivity Each ;line represents diff scan rates all been overlayed on one digarm Scan rates ranged from 0 .1 s-1 to 1 Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide Glycol Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero Therefore m is = everything else C = concentration 0.05 M ethylene glycol (acetonitrile
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Introduction This lab proposed the question of what happens when copper chloride and iron are combined and what is the balanced equation.By completing this lab‚ the goal was to determine the equation and product for the reaction of iron (Fe) and copper chloride (CuCl2). It was predicted either solid iron or solid copper would form. Methods To begin‚ 6.00026 grams of copper chloride was dissolved in 50ml of distilled water in order to have a solution with charged iron and chlorine atoms. Then‚ 6
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2. Preparation Of 1 M Na2CO3 Molecular mass of Na2CO3 = 106g Mass of salt in 100 ml of 1M solution = 10.6g Weighing of salt using electrical balance * Mass of Na2CO3 + beaker = 78.64g * Mass of beaker = 68.04g * Mass of Na2CO3 = 10.6g 1. 10.6g of Na2CO3 was weighed in a dry beaker. Small amount of distilled water was added and the salt was dissolved. 2. The contents of the beaker were transferred to
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explain why you identified each unknown as you did. Part Two (Spectroscopy): 1. Create and complete a data table for Part Two of the lab. It should include the name of the element‚ the colors‚ and the wavelength values of the observed lines. 2. Describe the line spectrum of the star. Give the color and wavelength value of the five brightest lines in the spectrum. Conclusion: 1. Explain‚ in your own words‚ why different elements produce different colors of light when heated. 2. Why do you
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Discover Your Products’ Hidden Potential by Ian C. MacMillan and Rita Gunther McGrath A simple matrix helps you identify the attributes that will make your goods and services most competitive. Why did a minor math error that would occur only once every 27‚000 years so enrage customers that it briefly threatened to derail Intel’s Pentium chip? And how could a feature as trivial as an inexpensive cup holder swing millions of customers to purchase a $17‚000 automobile—particularly when only
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it was found out that Component method is the most accurate as its approach is purely theoretical‚ that is‚ all other physical factors are neglected leaving only the appropriate ones to be calculated. In addition‚ properties of these quantities such as associativity and commutativity of the addition operation were also explored. 1. Introduction Vectors play an important role in many aspects of our everyday lives or of one’s daily routine. It is a mathematical quantity that has both a magnitude and
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global economy: the mineral‚ energy‚ land‚ forest‚ water resources Human resources of the world economy and labor migration Scientific and technical resources and information resources 1) 2) 3) 4) 5) 6) 7) By Consumption and resilience: exhaustible non-renewable exhaustible renewable inexhaustible As belonging to the natural environment: Lithosphere resources: minerals land and soil resources Resources hydrosphere: glaciers‚ water
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promote society’s values. Important social skills needed in the work force and everyday life are learned at school‚ such as sharing‚ compromise‚ and the importance of teamwork. As a student‚ I want to encourage and help children to reach their full potential. I want students to realize that they are all different‚ and understand that diversity is a good thing. I believe that there are different types of intelligence‚ and creativity is just as important as logic. Teachers’ behavior should reflect values
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