Balance Lab of a Copper Slug and Sodium Chloride (NaCl) on a Centigram and Electronic Scale PURPOSE/INTRODUCTION The purpose of this experiment is to learn how to weigh a substance on a centigram scale and an electronic scale through direct weight or by weight difference. The hypothesis is that all scales used should show the same weight for a given sample. The experiment should show precision and accuracy of the equipment being used. This will allow a better understanding on how to properly
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Name Lab‚ Week #1 BALANCE LAB Introduction Several instruments are used for determining the mass of a chemical; these instruments are called “balances.” However‚ different balances have different measurements‚ meaning that some balances are more accurate than others. Moreover‚ there are several techniques that are used or practiced in order to obtain an accurate measurement. The two techniques are direct weighing and weighing by difference. Direct weighing simply means to read the mass
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Procedure: The Centigram Balance: Direct Weighing 1. Weigh a slug on a centigram balance using the direct-weighing technique: Obtain a centigram balance from the Balances option under the Equipment menu. Select the centigram balance and add one slug from the Chemicals dialog box. Record the slug mass in the Observations. 2. Weigh the same slug directly on another centigram balance: Obtain a second centigram balance from the Balances option under the Equipment menu and place it under the
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Ashley Huston ILab‚ Week #2 CATIONS AND ANION LAB Introduction The purpose of this lab is to demonstrate a double-replacement reaction of ionic compounds. In this experiment‚ you will combine two ionic compounds. Both compounds are soluble in water. If a response happens between these two compounds‚ then a precipitate will form because one of the two resultant compounds is not soluble in water. This is a hint that a reaction took place. Cations are positively charged ions that are attracted
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right balance in their lives. Confucius felt that if equilibrium could be restored to the individual‚ then order could be restored to the family‚ to other relationships‚ to the state‚ to the world‚ and to the universe. He described the superior man as being one who could maintain centrality and universality. According to Confucius‚ “When a man pursues the Way and yet remains away from man‚ his course cannot be considered the Way.” I believe this means that if one attempts to pursue balance to better
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“Balance” One fine evening‚ while walking to my friend’s place enjoying the beautiful climate & cool breeze‚ making one to be there walking or standing still to enjoy it‚ I saw a group of kids riding their bicycles like a gang & roaming. A huge van came in the opposite direction‚ which meant they had to make space‚ which they have been occupying so far‚ for the monster vehicle. Due to sudden change of course or rough terrain‚ one of the kids lost his balance & fell to the safe side
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BALANCE OF TRADE AND BALANCE OF PAYMENTS – An Introduction The balance of payments account indicates a systematic record of all export incomes and import payments of a country during any year. Any import from abroad has to be paid for. On the other hand‚ any export will bring money flow into the country. If we subtract the total value of the imported commodities from the total value of the exported commodities of a country‚ what we obtain is called the ‘Balance of Trade’ of the country. If the
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Balance Lab Your Name Here Chemistry July 21‚ 2010 Introduction: Using the direct weighing and weighing by difference methods to find weight and mass of chemicals and compounds. Purpose: The purpose of this lab was to become familiar with the three different balances and two different methods used to find the weight and mass of chemicals and compounds in the ChemLab program. The lab was performed by using three different types of balances‚ and the direct weighing and weighing by difference
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Leo Tran IB Chemistry SL II R5 Ms. Crane January 4‚ 2012 Restoring Balance LAB Pre-Lab Questions 1. The solubility of iodine increases because the position of equilibrium has shifted towards the triiodide side of the reaction. Addition of the reactants causes an increase in the product which is directly related to the solubility of iodine in water in this case. 2. Ammonium chloride will be more soluble in hot water as in an endothermic reaction‚ increasing the temperature (which
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Energy Balance Report 1 (40 points) What is your name (Last‚ First)? Questions 2-4 pertain to general DRI recommendations for fat intake (found in your text/notes). What is the general recommendation for the percentage of total daily kilocalories that should be contributed by saturated fat? What is the general recommendation for the percentage of total daily kilocalories that should be contributed by unsaturated fats (hint: see lecture slide on “Recommendations for Fat Intake” from
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