6.05 Rate and Collision Theory Does surface area affect dissolving of Alka-Seltzer tablets? Materials: 1. solo cups 2. Alka-Seltzer tablets 3. Timer 4. Measuring Cup 5. Thermometer Procedures: 1. I placed out two of my solo cups on the counter 2. Then I put 1 cup of room temperature water into each cup. 3. Then put one Alka-Seltzer Tablet in one cup and time it until it dissolves completely. 4. In the second cup I put in a crushed up Alka- Seltzer tablet and timed it until it
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Lab Report: Chemistry DCP + CE Jovi Arya 28 August 2012 Aim The aim of this lab is to determine the order of the reaction between Propanone and aqueous Iodine with respect to Iodine. Apparatus and Reagents Apparatus I. Eye Protection (1) II. Spectrophotometer III. Cuvettes for spectrophotometer IV. Burette (4) V. Burette Stand (4) VI. Stopwatch VII. Conical flask (2) Reagents I. 0.020M I2 (aq.) II. 2.0M CH3COCH3 (aq.) III. 2.0M HCl (aq.) Raw
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Running head: Global Financing and Exchange Rate Mechanisms Global Financing and Exchange Rate Mechanisms Global Financing and Exchange Rate Mechanisms Who really benefits from tariffs? "A tariff is a tax on foreign goods upon importation." (Wikipeidia‚ 2007) When a ship arrives in port a customs officer inspects the contents and charges a tax according to a tariff formula. Since the goods cannot be unloaded until the tax is paid‚ it is the easiest tax to collect. Though this is the easiest
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Introductory Activity Heart Rate (pulse) Have the students find their heart pulse on the carotid artery of the neck. Use the index and middle finger to measure the pulse. Count the number of beats for 6 seconds and add a zero to the end of that number. This number represents the heart beats per minute. The heart pulse is located on either side of the wind pipe‚ next to the voice box. Allow the students to practice measuring their pulse to determine their resting heart rate. Explain that they need to
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Science Coursework-Rates of Reactions Introduction Investigating how the concentration of sodium-thiosulphate (STS) and hydrochloric acid (HCL) affects the rate of reaction in the experiment. In addition I am also checking how different variables affect my experiment and also how I can make my test more precise‚ reliable and accurate. Strategy According to my results‚ as the concentration of STS solution increased the rate of reaction of my experiment was increased. Also as the concentration
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Reducing Foreign Exchange Settlements A company that regularly conducts business in multiple countries must spend a considerable amount of time settling foreign exchange transactions. It may buy and sell the same currencies many times over as it processes individual payables and receivables. There are three ways to reduce the volume of these transactions‚ depending on the number of parties involved: Unilateral Netting: A company can aggregate the cash flows amongst its various subsidiaries to
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Effect of Concentration on Reaction Rate Aim: To use a simple reaction between sodium thiosulphate and hydrochloric acid to discover concentration this determines how fast chemical reactions occur. Independent Variable: Concentration of hydrochloric acid (%) Dependent Variable: Time taken for chemical reaction to take place (sec) Hypothesis: My prediction is that the increased concentration of the thiosulfate will in turn lead to an increase in the rate of reaction. This is a well informed
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Chemistry Coursework Rates of Reaction Investigation Introduction In this investigation I am going to be investigating the reaction between marble chips and hydrochloric acid‚ and to see what differences in the rate of this reaction arise when different concentrations of acid are used. Below is the word equation for this reaction: Calcium Carbonate + Hydrochloric Acid = Calcium Chloride + Carbon Dioxide + Water Below is the fully balanced chemical equation for this reaction. CaCo3
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students. International Trade helps our government and markets earn income from foreign countries. International Trade affects university students by offering school supplies such as computers more affordable because they are made and sold at a cheaper rate. University students are able to achieve a higher education when the school supplies are produced in a domestic market where the college student resides‚ and leaves the student more money for tuition. A government choice on tariffs and quotas has different
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on an exchange. Companies‚ governments and other groups obtain financing through debt or equity based securities. Primary markets are facilitated by underwriting groups‚ which consist of investment banks that will set a beginning price range for a given security and then oversee its sale directly to investors Definition of ’Secondary Market’ A market where investors purchase securities or assets from other investors‚ rather than from issuing companies themselves. The national exchanges - such
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