Does concentration affect the speed of chemical reactions? Problem: We are proving that “concentration” (the amount of reactants) is one of the things that can affect the speed of chemical reactions. We are also finding a way to keep the lid on the film canister for the longest period of time. We are using vinegar and water as reactants and changing the concentration every time to see the difference between the rates of reactions speed. Materials: - 1 graduated cylinder - 1 film canister
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Determine Value of R Lab 3 Report must be typed and submitted to Turn it in by Wednesday Sept 24th 11:59pm. Title +1 Purpose +1 Procedure +2 Data Table +4x Balanced Chemical Equation +2 Calculations Calculate R for each trial and then average. +5 Calculate % error +2 Type and Answer Discussion Questions +8 Additional Questions for Calculating the R Lab 1. One mole of hydrogen gas has a mass of 2.02 g. Use your value of molar volume to calculate the mass of one Liter of
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CHEMICAL KINETICS 1Y.S. MATBA 1Department of Materials‚ Mining‚ and Metallurgical Engineering‚ College of Engineering Date Performed: December 3‚ 2013 Date Submitted: December 09‚
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ethanol‚ and vegetable oil Compound Water (Polar) Ethanol (Polar) V. Oil (Non-polar) NaCl (Non-polar) UNLIKE UNLIKE LIKE I2 (Non-polar) UNLIKE UNLIKE LIKE Sugar (Polar) LIKE LIKE UNLIKE Naphthalene (Non-polar) UNLIKE UNLIKE LIKE Table 2. Likeness of polarity of solutes and solvents Compound Ethanol V. Oil Acetone Water MISCIBLE IMMISCIBLE MISCIBLE Ethanol ------------- IMMISCIBLE MISCIBLE Acetone MISCIBLE IMMISCIBLE -------------- V. Oil IMMISCIBLE ------------- IMMISCIBLE Table 3. Miscibility of some
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specific facet of war that could be considered most detrimental chemical warfare. "Chemical warfare is warfare (and associated military operations) using the toxic properties of chemical substances to kill‚ injure or incapacitate the enemy" (Chemical Warfare). But not only does it leave its mark on society and the people of the world‚ chemical warfare can destroy the unique qualities of nature as well. The practice of chemical warfare dates back to 1000 B.C and is still used today (Smart).
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Chromatography • • • Separation based on polarity of compounds Two potential phases for a compound to exist in: mobile and stationary Partitioning of compounds between mobile phase and stationary phase occurs: o Compounds that are less polar move more in the mobile phase‚ those that are more polar “stick” more on the stationary phase o These polarity differences cause compounds move at different rates and therefore can be separated 1. Mobile Phase: the phase the moves; can be gas or
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annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie‚Chong Ven Yen Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie‚Chong Ven Yen experiment 19 kinetics : the study of a chemical reaction experiment 19 kinetics : the study of a chemical reaction Results Part A [I-] / mol dm-3 | [S2O82-] / mol dm-3 | [S2O32-] / mol dm-3 | Time /s | Rate of I2 formation / mol dm-3 s-1 | 0.2 | 0.2 | 0.01 | 1.25 | 0.1600 | 0.2 | 0.15 | 0.01 | 13.37 | 0.0150 |
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04.05 Chemical Reactions: Combustion: Lab Worksheet and Rubric Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure: 1. Iron (III) and copper (II) sulfate solution 2. Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction. 3. 4. 5. Lead (II) nitrate and potassium iodide solutions 6. Pour about 2.0 mL of lead (II) nitrate into the test tube
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“Pittsburgh Sheep” we measured the temperature of the 10 milliliters of Solution 2. Then we dropped a ball of steel wool into the test tube and measured the temperature again. We stored the test tubes on the test tube rack to observe the next day. A chemical reaction did occur in the lab. There were a color change and an odor change that was observed on Day 2 of the lab. On Day 1‚ the liquid was clear and the smell was very strong. On Day 2 of the lab‚ most of the liquid was gone but the color was a
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Questions: 1. What did Jung mean with Polarities? Describe Jung’s Polarities in detail. 2. Explain which polarities apply to you. Give details. How do they serve you? What do you wish to change? Answers: 1. Jung believed that all humans possess certain specific patterns of behavior and perception. He considered these pattern or characteristics polarities. A polarity is the relationship between two elements that are on opposite ends of a spectrum with neither element‚ or in this case pattern of
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