Determining the Limiting Reactant and Percent Yield in a Precipitation Reaction Objectives: Observe the reaction between solutions of sodium carbonate and calcium chloride. Determine which of the reactants is the limiting reactant and which is the excess reactant. Determine the theoretical mass of precipitate that should form. Compare the actual mass with the theoretical mass of precipitate and calculate the percent yield. Materials: Balance 0.70 M sodium carbonate solution‚ Na2CO3(aq)
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GENERAL INSTRUCTIONS: A: The numerical are based on application of theory content. Attempt them in your physics notebook as practice assignment. B: Do all questions in sequence. UNIT –I: ELECTROSTATICS 1. Three identical charges each +q are placed at the corners of an equilateral triangle of side d cm. Calculate the force on a +ve charge +2q at the centroid of the triangle. 2. Force acting on a charged particle kept between the pair of plates‚ having equal and opposite charge‚ is F. If
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should ask the user for the total food purchase and the tip percent. Then‚ the algorithm will calculate the amount of a tip‚ a 7% sales tax‚ and the total meal charge (including tip). The food purchase‚ sales tax‚ tip amount‚ and total meal charge will need to be displayed to the customer. Be sure to THINK about the logic and design first (IPO chart and pseudocode)‚ then code the Visual Logic command line processing. Display all output using currency formatting (built-in Visual Logic function).
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Effects of Computer Use on High School Students’ Sense of Community MERVYN J. WIGHTING Regent University‚ Virginia ABSTRACT The author used a mixed-method design to determine whether and how use of computers in the classroom affects sense of learning in a community among high school students (N = 181). The results indicate that using computers in the classroom positively affects students’ sense of learning in a community. Analyses revealed that students believed that connectedness with their peers
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Chemical reactions proceeding until all the reactants are used is a common misconception. Chemical reactions actually behave differently. The general reaction equation is a A + b B → c C +d D in this equation A and B are the reactants forming the products C and D. However‚ unlike the common thought that the reaction ends when it runs out of A and B it actually does not. In most reactions C and D start to react to form A and B at a certain point as you can see in the equation c C + d D → a A + b
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My Unusual Study Technique Thais Richards-Roberts Ashworth College EN130.1.1 English Composition II May 1‚ 2013 Some of my usual study techniques are significant events on brainstorming‚ based on prewriting techniques which helps to unlock my memory based on new ideas‚ past experience and recollected ideas made by topic interest. I have used directed questioning‚ free writing‚ and brainstorming in other to complete my essays. With directed questioning‚ it helps me to narrow
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AP English Language and Composition Summer 2014 Assignment David Gold Introduction: An AP course in English Language and Composition is essentially a course in rhetoric that engages students in becoming skilled readers of prose written in a variety of rhetorical contexts‚ and in becoming skilled writers who compose for a variety of purposes. Both their writing and their reading should make students aware of the interactions among a writer’s purposes‚ audience expectations‚ and subjects‚ as
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become more and more popular amongst baseball players. We now find our baseball players in the "Steroids Era". Steroids help athletes become stronger and more muscular‚ which is clearly necessary when trying to make a home run. Many people believe that using steroids is considered cheating and nothing is more "Un-American" as cheating. Steroids didn ’t make it to baseballs banned substance list until 1991‚ and testing for major league players did not begin until the 2003 season. But‚ the MLB has decided
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Determining the Limiting Reactant and Percent Yield in a Precipitate Reaction (SMG 6D) AP Chemistry One example of a double replacement (metathesis) reaction is the mixing of two solutions resulting in the formation of a precipitate. In solution chemistry‚ the term precipitate is used to describe a solid that forms when a positive ion (cation) and a negative ion (anion) are strongly attracted to one another. In this experiment‚ a precipitation reaction will be studied. Stoichiometry
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Johannes Kepler and Rene Descartes that the speed of light was infinite‚ having the ability to travel at any distance immediately. A notable physicist named Galileo Galilei was one of the first scientists to ponder this phenomenon of light‚ and how to determine the speed of this unknown. In order to do so‚ Galilei formulates an experiment with an assistant. While standing on one hilltop‚ and his assistant standing on another farther away‚ both held a lamp that could be uncovered and covered whenever they
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