of one of the reactants (usually the cheaper one). • Limiting Reactant – reactant that will be totally consumed. • Excess Reactant – will not be totally consumed; will have left over. • The maximum amount of product (theoretical yield) that can be obtained in a chemical reaction is based on the limiting reactant. – Need to fully “GRASP” Example 3 • Consider the reaction: 2Sb (s) + 3I2 (s) → 2SbI3 (s) Determine the limiting reactant and the theoretical yield (in grams) when 1.20
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rocket the highest/longest distance in cm. Also to experimentally determine the % NaHCO3 in the tablet using the information from the highest/longest distance. Calculate the error and % error of NaHCO3 in an Alka-Seltzer tablet and to determine the limiting reagent for the highest/longest distance traveled. Alka-Seltzer tablets were first obtained. Vinegar‚ a 250-mL beaker‚ and a 50-mL (or 10-mL) graduated cylinder was given from the instructor. After the experiment‚ a graph of percent by mass of the
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Experiment 4: Conductivity of electrolyte solutions (Dated: October 29‚ 2009) I. INTRODUCTION Pure water does not conduct electricity‚ but any solvated ionic species would contribute to conduction of electricity. An ionically conducting solution is called an electrolyte solution and the compound‚ which produces the ions as it dissolves‚ is called an electrolyte. A strong electrolyte is a compound that will completely dissociate into ions in water. Correspondingly‚ a weak electrolyte dissolves
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SHORT-RUN TACTICAL DECISIONS The organizations strive to earn short-run profits. In making short-run decisions‚ not all cost and revenue data is relevant. The cost data relevant for decision-making is referred to as relevant costs and that which is not useful for decision-making is non-relevant costs. On the revenue side‚ the only relevant revenue is the incremental & differential revenue. Relevant and Non-Relevant Costs: 1. Future Costs and Sunk Costs (IR): A future cost is that cost yet
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| Next‚ we used stoichiometry to calculate the necessary mass of reactants to produce about 2 grams of silver: [pic] [pic] The limiting reactant is the reactant in a chemical reaction that limits the amount of the product that can be formed. The reaction will not continue after all of the limiting reactant is consumed. The limiting reactant in our reaction is Cu because we want the entire amount of the element to bond with the AgNO3. The excess reactant is the reactant in a chemical
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Ecology is the study of the relationship of between organisms and their environment‚ including both the living and nonliving compounds. Some of the ecological concepts include succession‚ energy flow between trophic levels‚ limiting factors‚ and carrying capacity. First‚ succession is a change in species structure of an ecological community over time. Over time species in the community become more and more abundant and may not be present at all one day. Also‚ sometimes new species might invade the
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of oxygen that the body can consume‚ transfer‚ or employ during a given exercise is called VO2max. This indicates the physical well-being of an individual. However‚ a multitude of physiological functions limit a person’s endurance for exercise by limiting maximum oxygen consumption by the body (Katch et al.‚ 2011). VO2max is used to determine the fitness levels‚ not only in athletes‚ but also in patients with heart failure‚ and is therefore both a prognostic and diagnostic tool. It is measured as
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Purpose: The purpose of this experiment is to: determine the limiting reactant of a chemical reaction that involves iron filings and a copper sulfate solution. Second‚ to determine the mole ratios between iron and copper and to show that a single replacement reaction occurs when iron and copper sulfate react with each other. And lastly‚ to determine/calculate the percent yield to better analyze the chemical reaction between iron and copper sulfate to produce copper and iron sulfate. The method
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Chemistry 1: PROBLEM SET SY 2012/2013 CLASS #: _______________ NAME_________________________________________ SECTION: ______________________ Stoichiometry II - Mole Calculations/ Limiting and Excess Reagent – Lecture Notes 1. Given the balanced equation N2(g) + 3H2(g) 2NH3(g) How many moles of ammonia are produced when 0.60 mol of nitrogen reacts with hydrogen? 2. Given the equation: SiO2 + HF SiF4 + H2O a. Calculate the number of moles HF that would completely react with 2.5 moles of
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the addition of a few drops of concentrated sulfuric acid‚ which catalyzed the reaction. The percent yield is calculated to determine the effectiveness of the reaction in preparing the desired product (aspirin). The limiting reactant of the equation was salicylic acid. After the limiting reactant was determined‚ the theoretical yield of aspirin was calculated at approximately 1.97g. The actual yield was only around 0.67g‚ producing a percent yield of 34.3%. These results show that the methods used
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