[Referencen] Before going to lab, a student read in his lab manual that the percent yield for a difficult reaction to be studied was likely to be only 13% of the theoretical yield. The student's prelab stoichiometric calculations predict that the theoretical yield should be 46.50 g What is the student's actual yield likely to be? Actual vield = Submit Answer Try Another Version 1 item attempt remaining

[Referencen] Before going to lab, a student read in his lab manual that the percent yield for a difficult reaction to be studied was likely to be only 13% of the theoretical yield. The student's prelab stoichiometric calculations predict that the theoretical yield should be 46.50 g What is the student's actual yield likely to be? Actual vield = Submit Answer Try Another Version 1 item attempt remaining

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 59QAP

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Baking powder is a mixture of cream of tartar (KHC4H4O6)and baking soda (NaHCO3). When it is placed in an oven at typical baking temperatures (as part of a cake, ¡or example), it under goes the following reaction ( CO2makes the cake rise): msp;(KHC4H4O6)(s)+NaHCO3(s)KNaC4H4O6(s)+H2O(g)+CO2(g) u decide to make a cake one clay, and the recipe calls for baking powder. Unfortunately, you have no baking powder. You do have cream of tartar and baking soda, so you use stoichiometry to figure out how much of each to mix. the following choices, which is the best way to make baking powder? The amounts given in the choices are in teaspoons (that is, you will use a teaspoon to measure the baking soda and cream of tartar). Justify your choice. sume a teaspoon of cream of tartar has the same mass as a teaspoon of baking soda. l type='a'> Add equal amounts of baking soda and cream of tartar. i>Add a bit more than twice as much cream of tartar as baking soda. i>Add a hit more than twice as much baking soda as cream of tartar. i>Add more cream of tartar than baking soda, hut not quite twice as much. i>Add more baking soda than cream of tartar, hut not quite twice as much.
When lead(II) sulfide is heated lo high temperatures in a stream of pure oxygen gas, solid lead(II) oxide forms with the release of gaseous sulfur dioxide. Write the unbalanced chemical equation for this reaction.
What is true about the chemical properties of the product? a. The properties are more like chemical A. b. The properties are more like chemical B. c. The properties are an average of those of chemical A and chemical B. d. The properties are not necessarily like either chemical A or chemical B. e. The properties arc more like chemical A or more like chemical B, but more information is needed. Justify your choice, and for choices you did not pick, explain what is wrong with them.
elate Active Learning Question 2 from Chapter 2 to the concepts of chemical stoichiometry.
The text explains that one reason why the actual yield for a reaction may be less than the theoretical yield is side reactions. Suggest some other reasons why the percent yield for a reaction might not be 100%.
You have seven closed containers, each with equal masses of chlorine gas (Cl2) . You add 10.0 g of sodium to the first sample, 20.0 g of sodium to the second sample, and so on (adding 70.0 g of sodium to the seventh sample). Sodium and chlorine react to form sodium chloride according to the equation 2Na(s)+Cl22NaCl(s) After each reaction is complete, you collect and measure the amount of sodium chloride formed. A graph of your results is shown below. Answer the following questions: a. Explain the shape of the graph. b. Calculate the mass of NaCl formed when 20.0 g of sodium is used. c. Calculate the mass of Cl2 in each container. d. Calculate the mass of NaCl formed when 50.0 g of sodium is used. e. Identify the leftover reactant, and determine its mass for parts b and d above.
Classify each of the following statements as true or false: a Coefficients in a chemical equation express the molar proportions among both reactants and products. b A stoichiometry problem can be solved with an unbalanced equation. c In solving a stoichiometry problem, the change from quantity of given substance to quantity of wanted substance is based on masses. d Percentage yield is actual yield expressed as a percentage of ideal yield. e The quantity of product of any reaction can be calculated only through the moles of the limiting reactant. f rH is positive for an endothermic reaction and negative for an exothermic reaction.
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cop - Company: Carroll Independent Fuel Company [Site: 64 - High's #64] (Logged in as manageró4) Content 2 OWLV2 | Online teaching and lea x A cvg.cengagenow.com/ilrn/takeAssignment/takeCXPCompliantActivity.do?locator=assignment-take Save CHAPTER 4 - STOICHIOMETRY: QUANTITATIVE INFORMATION ABOUT CHEMICAL REACTIONS Study Page 1 of 5 Next O Submi Barium hydride reacts with water to produce barium hydroxide and hydrogen gas. BaH2(s) + 2 H2O(1) → Ba(OH)2(ag) + H2 (g) If 7.011 g BaH, is combined with 63.000 g H,0, the reaction proceeds until all the BaH, is consumed. The hydrogen gas escapes to the environment, and the final weight of the flask is 69.808 g. The remaining water is evaporated, leaving 8.621 g Ba(OH)2 What mass of water is consumed in the reaction? g H2O
.ll Boost LTE 3:50 AM © N 42% Question 1 of 4 Submit What is the difference between actual yield and theoretical yield? A) Actual yield has to do only with the reactants of a reaction, and theoretical yield has to do only with the products of a reaction. B) Actual yield is how much is actually produced in a reaction (it has to be given or measured), and theoretical yield is a calculation that has to be done. C) Actual yield is how much the reaction produces, and theoretical yield is how much a reaction consumes. D) Actual yield has to do with how much you can actually get out of a reaction, and theoretical yield is how much you can get out of a reaction if you have maximum starting materials. Tap here or pull up for additional resources