Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 3, Problem 31E
Which of the following represents the least number of molecules?
- 20.0 g of H2O (18.02 glmol)
- 77.0 g of CH4 (16.06 glmol)
- 68.0 g of CaH2 (42.09 g/mol)
- 100.0 g of N2O (44.02 g/mol)
- 840 g of HF (20.01 g/mol)
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
How many molecules are in 0.200 g CO2?
C= 12.01 g/mole and O = 16.00 g/mole
A.) 2.74 x10exp21 molecules
B.) 1.20 x 10exp-21 molecules
C.) 1180 molecules
D.) 2.74 x 10exp22 molecules
CO2 has a molar mass of 44 grams per mole. 4.4 grams of CO2 is how many moles? A) 193.6 molecules b) 0.1 molecules c) 6.02 x 1022 molecules d) 1.66 x 10-24 molecules
CO2 has a molar mass of 44 grams per mole. 4.4 grams of CO2 is how many moles? A) 6 moles b) 0.1 mole c) 2.65 x 1024 moles d) 7.31 x 10-24 moles
Ethanol, C2H5OH, has a density of 0.785 g/mL and a molar mass of 46.07 g/mol. How many moles of ethanol are present in 1.00 L of pure ethanol?
(A) 17.0 moles
(B) 21.7 moles
(C) 27.7 moles
(D) 2.77 moles
Chapter 3 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 3 - What is the total mass (amu) of carbon in each of...Ch. 3 - What is the total mass of hydrogen in each of the...Ch. 3 - Calculate the molecular or formula mass of each of...Ch. 3 - Determine the molecular mass of the following...Ch. 3 - Determine the molecular mass of the following...Ch. 3 - Which molecule has a molecular mass of 28.05 amu?Ch. 3 - Write a sentence that describes how to determine...Ch. 3 - Compare 1 mole of H2, 1 mole of O2, and 1 mole of...Ch. 3 - Which contains the greatest mass of oxygen: 0.75...Ch. 3 - Which contains the greatest number of moles of...
Ch. 3 - How are the molecular mass and the molar mass of a...Ch. 3 - Calculate the molar mass of each of the following...Ch. 3 - Calculate the molar mass of each of the following:...Ch. 3 - Calculate the empirical or molecular formula mass...Ch. 3 - Calculate the molar mass of each of the following:...Ch. 3 - Determine the number of moles of compound and the...Ch. 3 - Determine the mass of each of the following: 0.0...Ch. 3 - Determine the number of moles of the compound and...Ch. 3 - Determine the mass of each of the following: 2.345...Ch. 3 - The approximate minimum daily dietary requirement...Ch. 3 - Determine the mass in grams of each of the...Ch. 3 - A 55-kg woman has 7.5103 mol of hemoglobin (molar...Ch. 3 - Determine the number of atoms and the mass of...Ch. 3 - Determine which of the following contains the...Ch. 3 - Determine which of the following contains the...Ch. 3 - Diamond is one form of elemental carbon. An...Ch. 3 - The Cullinan diamond was the largest natural...Ch. 3 - One 55-gram serving of a particular cereal...Ch. 3 - A certain nut crunch cereal contains 11.0 grams of...Ch. 3 - A tube of toothpaste contains 0.76 g of sodium...Ch. 3 - Which of the following represents the least number...Ch. 3 - What information do we need to determine the...Ch. 3 - Calculate the following to four significant...Ch. 3 - Determine the following to four significant...Ch. 3 - Determine the percent ammonia, NH3, in Co(...Ch. 3 - Determine the percent water in CuSO45H2O to three...Ch. 3 - Determine the empirical formulas for compounds...Ch. 3 - Determine the empirical formulas for compounds...Ch. 3 - A compound of carbon and hydrogen contains 92.3% C...Ch. 3 - Dichioroethane, a compound that is often used for...Ch. 3 - Determine the empirical and molecular formula for...Ch. 3 - Polymers are large molecules composed of simple...Ch. 3 - A major textile dye manufacturer developed a new...Ch. 3 - Explain what changes and what stays the same when...Ch. 3 - What information do we need to calculate the...Ch. 3 - What does it mean when we say that a 200-mL sample...Ch. 3 - Determine the molarity for each of the following...Ch. 3 - Determine the molarity of each of the following...Ch. 3 - Consider this question: What is the mass of the...Ch. 3 - Consider this question: What is the mass of solute...Ch. 3 - Calculate the number of moles and the mass of the...Ch. 3 - Calculate the number of moles and the mass of the...Ch. 3 - Consider this question: What is the molarity of...Ch. 3 - Consider this question: What is the molarity of...Ch. 3 - Calculate the molarity of each of the following...Ch. 3 - Calculate the molarity of each of the following...Ch. 3 - There is about 1.0 g of calcium, as Ca2+, in LO L...Ch. 3 - What volume of a 1.00MFe( NO3)3 solution can be...Ch. 3 - If 0.1718 L of a 0.3556-M C3H7OH solution is...Ch. 3 - If 4.12 L of a 0.850 MH3PO4 solution is be diluted...Ch. 3 - What volume of a 0.33MC12H22O11 solution can be...Ch. 3 - What is the concentration of the NaCl solution...Ch. 3 - What is the molarity of the diluted solution when...Ch. 3 - What is the final concentration of the solution...Ch. 3 - A 2.00-L bottle of a solution of concentrated HCl...Ch. 3 - An experiment in a general chemistry laboratory...Ch. 3 - What volume of a 0.20MK2SO4 solution contains 57 g...Ch. 3 - The US Environmental Protection Agency (EPA)...Ch. 3 - Consider this question: What mass of a...Ch. 3 - What mass of a 4.00% NaOH solution by mass...Ch. 3 - What mass of solid NaOH (97.0% NaOH by mass) is...Ch. 3 - What mass of HCl is contained in 45.0 mL of an...Ch. 3 - The hardness of water (hardness count) is usually...Ch. 3 - The hardness of water (hardness count) is usually...Ch. 3 - In Canada and the United Kingdom, devices that...Ch. 3 - A throat spray is 1.40% by mass phenol, C6H5OH, in...Ch. 3 - Copper(I) iodide (CuI) is often added to table...Ch. 3 - A cough syrup contains 5.0% ethyl alcohol, C2H5OH,...Ch. 3 - D5W is a solution used as an intravenous fluid. It...Ch. 3 - Find the molarity of a 40.0% by mass aqueous...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Integrated Concepts A toy gun uses a spring with a force constant of 300 N/m to propel a 10.0-g steel ball. If ...
College Physics
Q1. Which wavelength of light has the highest frequency?
a) 10 nm
b) 10 mm
c) 1 nm
d) 1 mm
Chemistry: A Molecular Approach (4th Edition)
Consider a galvanic cell that uses the following half-reactions: 2H+(aq)+2eH2(g)Al3+(aq)+3eAl(s) a) What materi...
CHEMISTRY-TEXT
For each of the following molecules, (1) draw the correct Lewis structure; (2) label each polar covalent bond w...
General, Organic, and Biological Chemistry (3rd Edition)
Write Lewis symbols for the following atoms. (a) Kr; (b) Ge; (c) N; (d) Ga; (e) As; (f) Rb.
General Chemistry: Principles and Modern Applications (11th Edition)
For the generic equilibrium HA(aq) ⇌ H + (aq) + A- (aq), which of these statements is true?
The equilibrium con...
Chemistry: The Central Science (14th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- How much, in grams, does each of the following quantities of matter weigh? a. 2.00 moles of C atoms b. 3.00 moles of CO molecules c. 5.00 moles of F atoms d. 5.00 moles of F2 moleculesarrow_forwardIndicate the number of objects present in each of the following molar quantities. a. Number of apples in 1.00 mole of apples b. Number of elephants in 1.00 mole of elephants c. Number of atoms in 1.00 mole of Zn atoms d. Number of molecules in 1.00 mole of CO2 moleculesarrow_forwardWhich of the following has the largest number of molecules? a 1 g of benzene, C6H6 b l g of formaldehyde, CH2O c l g of TNT, C7H3N3O6 d l g of naphthalene, C10H8 e l g of glucose, C6H12O6arrow_forward
- How many grams of NaCl and BaSO4 would be produced from 5g of BaCl2? BaCl2 (aq) + Na2SO4 (aq) = 2 NaCl (aq) + BaSO4 (s)arrow_forwardcalculate the masses of both reactants and products assuming a 100% reaction. Na3PO3 + CaCl2 = Ca3(PO3)2 NaCl 3.2g 2.6garrow_forwardHow many grams of NBr3 can be made from 525 g Br2 ? N2 + 3 Br2 → 2 NBr3 + 44.0 kJ The molar mass of NBr3 is 253.719 g and the molar mass of Br2 is 159.808 g ________________ mol Br2 (525 g Br2)(–––––––––––––––––––––––––––) = _____________ mol Br2 _________________ g Br2 _________________ mol NBr3 _____________________ mol Br2 (–––––––––––––––––––––––––––––––) = ______________ mol NBr3 _________________ mol Br2 __________ g NBr3 __________________ mol NBr3 (–––––––––––––––––––––––––––––) = _____________ g NBr3 note: this is a theoretical yield…arrow_forward
- How many hydrogen atoms are present in 3.2 g of NH3? a) 0.19 atoms b) 0.56 atoms c) 1.1 × 1023 atoms d) 3.5 × 1022 atoms e) 3.4 × 1023 atomsarrow_forwardHow many grams of N2 are needed to make 444 g of NBr3 ? N2 + 3 Br2 → 2 NBr3 + 44.0 kJ The molar mass of NBr3 is 253.719 g and the molar mass of N2 is 28.013 g _______________ mol NBr3 (444 g NBr3)(–––––––––––––––––––––––––) = ______________ mol NBr3 ____________________ g NBr3 _______________ mol N2 _______________ mol NBr3 (–––––––––––––––––––––––––) = ___________---- mol N2 _________________ mol NBr3 _______________ g N2 _____________________ mol N2 (–––––––––––––––––––––––––) = ___________________ g N2 __________________ mol…arrow_forwardTCDD, also called dioxin (C12H4Cl4O2, molar mass 322.0 g/mol), is a potent poison. The average lethal dose in humans is estimated to be 3.0 ×10−2 mg per kg of body weight. (a) How manygrams constitute a lethal dose for a 73−kg individual? (b) How manymolecules of TCDD does this correspond to? (a) ×10 g dioxin(b) ×10 moleculesarrow_forward
- Aspirin, C₉H₆O₄, is prepared by reacting salicylic acid, C₇H₆O₃, with acetic anhydride, C₄H₆O₃, in the reaction:2C₇H₆O₃ + C₄H₆O₃ → 2C₉H₆O₄ + H₂OA student is told to prepare 22.0 g of aspirin. He is also told that he should use a 50.0% excess of acetic anhydride and expect to get a 64.0% yield in the reaction.How many grams of salicylic acid, C₇H₆O₃, should he use? And how many grams of acetic anhydride, C₄H₆O₃, should he use?arrow_forwardIf 43.0 g of NO and 26.9 g of O₂ react together, what is the mass in grams of NO₂ that can be formed via the reaction below? 2 NO (g) + O₂ (g) → 2 NO₂ (g)arrow_forwardThe number of moles in 112 g of acetylsalicylic acid (aspirin), C9 H8, O4 ( C=12 amu, H=1.007 amu, O=16 amu) isarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
GCSE Chemistry - Differences Between Compounds, Molecules & Mixtures #3; Author: Cognito;https://www.youtube.com/watch?v=jBDr0mHyc5M;License: Standard YouTube License, CC-BY