Concept explainers
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)
Want to see the full answer?
Check out a sample textbook solutionChapter 10 Solutions
Bundle: Introductory Chemistry: An Active Learning Approach, 6th + LMS Integrated for OWLv2, 4 terms (24 months) Printed Access Card
- Apply When a campfire begins to die down and smolder, you can rekindle the flame by fanning the fire. Explain, in terms of stoichiometry, why the fire again begins 10 flare up when fanned.arrow_forwardA solution containing 43.5g of calcium nitrate is added to a solution containing 39.5g of sodium fluoride. What mass grams of calcium fluoride precipitates? What mass grams of which reactant is in excess?arrow_forwardUpon heating, mercury (II) oxide undergoes a decomposition reaction: 2HgO(s)2Hg(l)+O2(g) A sample of HgO weighing 7.22g was heated. The collected mercury weighed 5.95g. What was the percentage yield of the reaction?arrow_forward
- Draw a box and then sketch five space-filling models of diatomic molecules within it, similar to those in Question 3. Draw an arrow and draw a product box to the right of your arrow. Add the remaining space-filling models necessary to depict the balanced reaction X2+Y2XY3 the reaction is not yet balanced, in which your five molecules represent the species X2.arrow_forwardConsider the following particulate-level representation of a chemical equation: The white spheres represent hydrogen atoms, the black sphere represents a carbon atom, and the red spheres represent oxygen atoms. a Write a balanced chemical equation representing this reaction. b Write a word description of the reaction on the particulate and molar levels.arrow_forwardAlkali metal hydroxides are sometimes used to “scrub” excess carbon dioxide from the air in closed spaces (such as submarines and spacecraft). For example, lithium hydroxide reacts with carbon dioxide according to the unbalanced chemical equation :math>LiOH(s)+CO2(g)Li2CO3(s)+H2O(g) ppose a lithium hydroxide canister contains 155 g of LiOH(s). What mass of CO2(g)will the canister be able to absorb? If it is found that after 24 hours of use the canister has absorbed 102 g of carbon dioxide, what percentage of its capacity has been reached?arrow_forward
- 3.10 Define the term stoichiometric coefficient.arrow_forwardConsider a reaction represented by the following balanced equation :math>2A+3BC+4D u find that it requires equal masses of A and B so that there are no reactants left over. Which of the following is true? Justify your choice. l type='a'> The molar mass of A must be greater than the molar mass of B. i>The molar mass of A must be less than the molar mass of B. i>The molar mass of A must be the same as the molar mass of B.arrow_forwardA traditional analysis for samples containing calcium ion was to precipitate the calcium ion with sodium oxalate (Na2C2O2)solution and then to collect and weigh either the calcium oxalate itself or the calcium oxide produced by heating the oxalate precipitate: :math>Ca2+(aq)+C2O42(aq)CaC2O4(s) ppose a sample contained 0.1014 g of calcium ion. What theoretical yield of calcium oxalate would be expected? If only 0.2995 g of calcium oxalate is collected, what percentage of the theoretical yield does that represent?arrow_forward
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningLiving By Chemistry: First Edition TextbookChemistryISBN:9781559539418Author:Angelica StacyPublisher:MAC HIGHER
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoWorld of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College Div