IB Chemistry SL (Jr) Candidate: Yunha Kim ! ! ! ! ! ! ! ! ! ! ! Determination of Gas Constant R through Mg and HCl Reaction ! ! ! ! ! !1 of !9 IB Chemistry SL (Jr) Candidate: Yunha Kim Objective ! Candidates will react Magnesium with Hydrochloric acid and collect Hydrogen. The grams of the produced Hydrogen will be calculated and compared to the theoretical yield of Hydrogen. ! Controlled Variables ! Mass of Magnesium Ribbon This will be kept constant
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Merriam-Webster defines literacy as the ability to read and write. The term may also refer to familiarity with literature and to a basic level of education obtained through the written word(Merriam-Webster‚ 2012). Most people have absolutely no idea what it means to be literate; what tribulations had to be endured in order for reading and writing to be extended to common individuals. Literacy was hoarded by priests‚ monks‚ and scholars during the Dark ages. It wasn’t until the invention of the Gutenberg
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2 Moderately Unfamiliar Assumptions About Al-Qaeda Introduction to Homeland Security Research Paper August 17‚ 2013 Mr. William R Di Lorio 2 moderately unfamiliar assumptions about al-Qaeda Abstract From intellectuals to policy-makers alike. All of the extraordinary output on the subject of al-Qaeda‚ has recently led to a number of far-reaching theories about the group which remain startlingly unexplored. The two assumptions‚ this paper examines and reveals each one ’s foundational
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The study states two different split method transportation approaches to a Mars Mission: SEP-Chem and Hybrid. Compare and contrast them. State the approach you favor and why. In the Evolvable Mars Campaign the two transportation methods investigated are SEP-Chem and Hybrid. Similarly‚ they both use split methods combining solar electric and chemical propulsions to escort man on a mission to mars‚ and back to Earth. Even though‚ they both can provide the extraordinary ride it’s their unique
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OIL SPILL PROJECT NO.6 Statement of Problem: In this project‚ the goal is to apply the knowledge of fluid dynamics in order to determine the effect of two parameters (oil density and volume fraction) on how long will it take for an oil drop to rise a distance of 1m in an oil/water distribution. Data: The following information was provided; | |Water | | | | | | | |
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Chem 3418 Organic Chemistry Laboratory I Acid Base Review Definition In general‚ an acid is a substance that can donate a proton (H+) and a base is a substance that can accept a proton. Any proton in an organic molecule can potentially be donated. The most acidic proton in a molecule would be donated first. Any lone pair in an organic molecule can act as the proton acceptor. An acid (HA) reacts with a base (in this case H2O) to form the conjugate base of the acid (A-) and the conjugate acid of the
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Observation of Different Photons when Elements are Heated Introduction: The bright line spectrum is the range of colorful lights that are emitted from an atom in its excited state. A “normal” atom‚ or an atom in its ground state‚ is when all of the atom’s electrons are in their proper energy level. When an atom is in its excited state‚ electrons jump to different energy levels making them unstable. As the electron tries to get back to its respective energy level‚ energy is emitted in the form
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Name: Date: Graded Assignment Lab Report Answer the questions below. When you have finished‚ submit this assignment to your teacher by the due date for full credit. (5 points) Score 1. Which combinations of substances resulted in a chemical change? Answer: The potassium nitrate and the ammounuiam hydroxide had a chemical change. It started bubbling and getting really foggy. The calcium nitrate and ammonuiam hydroxide did nothing. It’s all clear still‚ but no chemical change. The copper nitrate
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Ideal gases: No volume‚ no intermolecular forces Atoms/Molecules that are gases at room temperature Noble Gases. H2‚ N2‚ O2‚ F2‚ Cl2. Methane‚ ethane‚ propane‚ butane Gas: Fills the container. Forces of intermolecular attraction are weak. Vapor: Gas state of a substance that is usually a liquid or solid Ek = (Kinetic energy of a gas molecule) Mu2/2. U2 = 3 (R Gas Constant) (Temperature in Kelvin) / molar mass in kg Speed goes Up with temp and down with mass Pressure: Collisions with the side of a
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RECRYSTALLIZATION AND MELTING POINT DETERMINATION OF BENZOIC ACID ANSWERS TO QUESTIONS 1. How does the use of fluted filter paper hasten filtration? Why is it advisable to place a small piece of wire between the funnel and the mouth of the flask during hot filtration? Fluted filter paper is effective in preventing crystal formation in the filter paper. It is also often used in filtering hot saturated solution used during crystallization. One major advantage of a fluted filter is that it increases
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