LA PURISIMA CONCEPCION ACADEMY (Formerly Mataasnakahoy High School ) Committed to Faithful Service; Inspired by Love FOURTH QUARTER LEARNING PLAN 4.1 Understanding by Design (UBD) Plan in Science and Technology III ( Chemistry ) ____________________________________________________________________________ Topic: Chemical Accounting Subject Area: Chemistry Big Ideas: The Chemical Reactions Year Level: Third Year Allocated
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hydrogen gas produced. I will do that by dividing the volume of gas produced by 24000cm3 : Moles (n) = Volume (cm") 24000 cm" So: n = 122 cm" = 0.005083 mol of H2 24000 cm" Equation: 2 Li(s) + 2 H2O (L)2LiOH(Ag) + H2 (g) By looking at the Stoichiometry ratio in the reaction I can see that the ratio of Li: H2 is 2:1‚ therefore the number of moles of Li will be twice as the number of moles of H2 in the reaction. So: 0.005083 x 2= 0.010166 mol of Li Mass of Lithium = Mass of the Lithium plus
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this investigation an unknown volatile liquid is vaporized so that the ideal gas law can be used to determine its molar mass. This study will apply the ideal gas law in tandem with the concept of volatile liquids and basic molar mass related stoichiometry to identify the molar mass of an unknown liquid. A small sample of the unknown liquid was but into Erlenmeyer flask and vaporized in a water bath. Measurements of mass‚ pressure‚ temperature and volume were taken in order to calculate a molar mass
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electrons lost and gained. P.721- 728 Write and balance half-reactions and complete redox reactions. P.730 - 736 Write and balance equations for complex oxidation reduction reactions occurring in acidic or basic solutions. P.736 - 739 Solve redox stoichiometry problems for redox reactions. P.742 - 745 Define electrochemical cells. P.757-760 Draw and label an electrochemical cell. Include: P.757-760 (i) anode (ii) cathode (iii) salt bridge (iv) direction of flow of electrons (iv) direction of flow
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Lab Report 7: Analysis of Cereal Introduction: The objective of this lab was to consult for the FDA regarding a recently surfaced scandal involving false reporting of iron content in cereal as well as iron tablets. The makers of the cereal and the iron tablets‚ respectively‚ were allegedly reporting higher amounts of iron in their products than actually existed‚ as a way to save money but continue to provide products with “adequate” amounts of iron. The FDA needed consulting in order to analyze
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Introduction A gas is the state of matter that is characterized by having neither a fixed shape nor a fixed volume. Gases exert pressure‚ are compressible‚ have low densities and diffuse rapidly when mixed with other gases. On a microscopic level‚ the molecules (or atoms) in a gas are separated by large distances and are in constant‚ random motion. When dealing with gases‚ the Ideal Gas Law equation is the most famous equation used to relate all the factors in dealing and solving the problem
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Chemistry For Dummies From Chemistry For Dummies‚ 2nd Edition by John T. Moore During the first year of high school chemistry or the first semester of college chemistry‚ all the terms‚ units of measurement‚ and atoms‚ molecules‚ elements‚ and compounds may seem a bit overwhelming. The good news: Your Chem I class doesn’t have to be torture. This handy Cheat Sheet provides some basic information you can refer to regularly to make your chemistry class just a tiny bit easier. Chemical Bonding Basics
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will aid in finding the concentration. These procedures are dependent on gravimetric analysis (the most accurate and reliable procedures). Important requirements for a successful gravimetric analysis include: a pure compound with an identifiable stoichiometry‚ the precipitation reaction must be complete‚ specificity of precipitation reagent in sample‚ the solid sample should be a reasonable-sized crystal‚ and the molecular weight should be reasonable enough for a good weight of the precipitate generated
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Title: CHEM-181 General Chemistry I 2. Semester Hours: 4 Contact Hours: (3 + 2) Lecture Lab 3. Catalog Description This course‚ intended for science majors‚ is the first course of a two-course sequence. Course topics include stoichiometry‚ inorganic nomenclature‚ solutions‚ gas laws‚ thermochemistry‚ atomic structure‚ and chemical bonding. The laboratory work includes basic laboratory techniques and is intended to support lecture topics. It is highly recommended that students
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same can be done for sodium thiosulfate which results in the same molarity. The method used for the experiment was continuous variations‚ also called Job’s Method. The method of continuous variations is a simple technique for determining the stoichiometry of reactants in a reaction. The experiment was then performed by trying 8 different combinations of the reactants while recording the change in temperature to determine which combination created the biggest reaction. In this case‚ 6.25mL sodium
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