Question 1 (Limiting Reagent) 15.00 g aluminum sulfide & 10.00 g water react until the limiting reagent is used up. [Atomic mass: H = 1.008‚ Al = 26.98‚ S = 32.07‚ O = 16.00] Here is the balanced equation for the reaction: Al2S3 + 6 H2O ( 2 Al (OH)3 + 3 H2S (i) Which of the two reactants is the limiting reagent? (ii) What is the maximum mass of H2S which can be formed from these reagents? (iii) How much excess reagent remains after the reaction is complete
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Observing a Limiting Reactant An experiment was carried out to predict the limiting reactant in a chemical reaction between Magnesium and Hydrochloric acid‚ using the mole concept. Limiting Reactant: It is the reactant that will deplete or will be used up first during a chemical reaction. Limiting reactant also determine how long the reaction will last for. Balanced Equation: Mg + 2HCl = MgCl2 + H2 The balanced equation is needed to determine the mole ratio between the two reactants. From
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substances react. By examining one specific example of stoichiometric determination‚ which is: “Stoichiometry and limiting reacting”‚ we found out the different mass proportions in which substance react. In this case‚ we used two common acids for this experiment (HCl‚ and H2SO4) and base NaOH Introduction: For this experiment‚ we use Stoichiometry and limiting reactant. The limiting reactant refers to the reactant that controls the amount of product that is
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It is stated in this article that there is little if any social-science studies that show that words themselves can affect a person directly. Through studies researched by Jay and Janschewitz‚ it has found that cursing starts in a person by the age of two and fully develops by the age of 11 or
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Chapter One: The Science of Psychology Chapter Overview Experiencing Psychology: The Mystery that Is You King discusses how people view others and how everyone‚ including you‚ can be an everyday hero. Psychology is considered a science‚ but it is different from the other sciences with which students are familiar. Psychology‚ as a science‚ focuses on the many facets that make everyone who they are. Psychology as a Science of All Human Behavior Psychology is defined as the scientific
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During this lab‚ we found the excess reactant and limiting reactant between Aluminum and Copper (ll) Chloride. Using stoichiometry‚ we were able to make predictions. Through the reaction 2Al + 2CuCl₂ → 3Cu + 2AlCl₃ we carried out this experiment and determined that the limiting reactant was CuCl₂ and that the aluminum was in excess. We also determined the percentage yield of copper. Purpose: The purpose of this experiment was to determine the limiting reactant and percentage yield of the reaction that
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In his Article "Science Nonfiction" Niv Lilien expresses the fact that in the future‚ technology will have a massive role in our daily life style. He emphasizes that a future that revolves exclusively around technology is not far away .Throughout the article‚ he verifies his assumptions by interviewing technology leaders and specialists who share the same mindset as he does. The writer begins with an imaginary story which describes how he believes our future will look like in 40 years. The protagonist
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LMounika Alluri Chemistry HL Block D 19/9/12 LAB REPORT #1 LIMITING REAGENTS INVESTIGATION Aim: To determine the limiting reagent and percent yield of the reaction between potassium iodide with lead (II) nitrate solution. Apparatus required: Safety glasses‚ funnel stands‚ watch glass‚ oven‚ electronic balance‚ wash bottle with distilled water‚ test tubes‚ 10.0mL 0.50M lead (II) nitrate‚ 10.0mL 0.30M of potassium iodide solution‚ two 100.0 mL beakers‚ funnel‚ filter paper. Reaction
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from theoretical yield. Through simple molar calculations‚ using the coefficients in the balanced chemical equation( CaCl2(aq) + 2NaOH(aq) Ca(OH)2 + CaCl2)‚ the limiting reagent could be determined from the volumes of reactants used. The number two to four tests turned out as expected‚ NaOH and CaCl2 respectively being the limiting reagents. In the second test‚ according to our calculations‚ the products should have completely reacted‚ leaving pure water after filtration. In the test‚ the addition
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BPK 310 – Assignment 1 UNIT 1 Question 1 (5 marks): Discuss the rate-limiting factor. Why is it important to consider when studying exercise physiology and training? Provide one example to clarify your understanding. The rate-limiting factor is the “step” that limits performances (the “slow step”). If we know the rate-limiting step in a certain physiological pathway or training situation‚ we can manipulate the factors of this step to change and increase the rate of the pathway. This will improve
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