Concept explainers
(a)
Interpretation:
Whether
(a)
Explanation of Solution
The mass of four moles of carbon is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
The mass of six moles of carbon is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
Thus, the percentage composition of carbon in
(b)
Interpretation:
Whether
(b)
Explanation of Solution
The mass of four moles of hydrogen is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
The mass of four moles of carbon is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
Therefore,
(c)
Interpretation:
Whether
(c)
Explanation of Solution
The mass of four moles of hydrogen is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
The mass of four moles of carbon is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
Therefore,
(d)
Interpretation:
Whether
(d)
Explanation of Solution
The empirical formula of
(e)
Interpretation:
Whether
(e)
Explanation of Solution
The mass of eight moles of hydrogen is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
The mass of eight moles of hydrogen is calculated as follows:
Thus, the total mass of
The percentage composition of carbon in
Therefore,
Want to see more full solutions like this?
Chapter 4 Solutions
EBK INTRODUCTION TO CHEMISTRY
- What mass of compound is present in 5.00 moles of each of the compounds in Exercise 52?arrow_forwardMoles within Moles and Molar Mass Part 1: a How many hydrogen and oxygen atoms are present in 1 molecule of H2O? b How many moles of hydrogen and oxygen atoms are present in 1 mol H2O? c What are the masses of hydrogen and oxygen in 1.0 mol H2O? d What is the mass of 1.0 mol H2O? Part 2: Two hypothetical ionic compounds are discovered with the chemical formulas XCl2 and YCl2, where X and Y represent symbols of the imaginary elements. Chemical analysis of the two compounds reveals that 0.25 mol XCl2 has a mass of 100.0 g and 0.50 mol YCl2 has a mass of 125.0 g. a What are the molar masses of XCl2 and YCl2? b If you had 1.0-mol samples of XCl2 and YCl2, how would the number of chloride ions compare? c If you had 1.0-mol samples of XCl2 and YCl2, how would the masses of elements X and Y compare? d What is the mass of chloride ions present in 1.0 mol XCl2 and 1.0 mol YCl2? e What are the molar masses of elements X and Y? f How many moles of X ions and chloride ions would be present in a 200.0-g sample of XCl2? g How many grams of Y ions would be present in a 250.0-g sample of YCl2? h What would be the molar mass of the compound YBr3? Part 3: A minute sample of AlCl3 is analyzed for chlorine. The analysis reveals that there are 12 chloride ions present in the sample. How many aluminum ions must be present in the sample? a What is the total mass of AlCl3 in this sample? b How many moles of AlCl2 are in this sample?arrow_forwardCalculate the percent composition by mass of the following compounds that are important starting materials for synthetic polymers: a. C3H4O2 (acrylic acid, from which acrylic plastics are made) b. C4H6O2 (methyl acrylate, from which Plexiglas is made) c. C3H3N (acrylonitrile, from which Orion is made)arrow_forward
- Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of CuI Are contained in 1.00 lb (454 g) of table salt containing 0.0100% CuI by mass?arrow_forwardConsidering your answer to Exercise 79, which type of formula, empirical or molecular, can be obtained from elemental analysis that gives percent composition?arrow_forwardWrite the balanced chemical equation for the complete combustion of adipic acid, an organic acid containing 49.31% C, 6.90% H, and the remainder O, by mass.arrow_forward
- Consider the following diagram, where atom X is represented by a square and atom Y is represented by a circle. (a) Write the equation for the reaction represented by the diagram. (b) If each circle stands for a mole of Y and each square a mole of X, how many moles of X did one start with? How many moles of Y? (c) Using the same representation described in part (b), how many moles of product are formed? How many moles of X and Y are left unreacted?arrow_forwardHigh-density lipoprotein (HDL) cholesterol is the good cholesterol because adequate levels reduce the risk of heart disease and stroke. HDL levels between 40. and 59 mg/dL are typical for a healthy individual. What is this range of HDL cholesterol in units of mol/L? The formula for cholesterol is C27H46O.arrow_forwardA compound was analyzed and found to contain the following percentages of elements by mass: carbon, 79.89%; hydrogen, 20.11%. l type='a'> Determine the empirical formula of the compound. i>Which of the following could be a molar mass of the compound? 13.018 g/mol 16.042g/mol 28.052 g/mol 30.068 g/mol 104.23 g/rnolarrow_forward
- 1. Which of the following hydrocarbons has the highest mass percentage of carbon? methane, CH4 ethane, C2H6 propane, C3H8 butane, C4H10arrow_forwardcertain transition metal ion (Mn+) forms a compound with oxygen (MxOy) . The molar mass of the compound is 250.2 g/mol. If the charge on the transition metal ion is +3, what is the identity of the transition metal, M? l type='a'> Th Ti Hg Ru Agarrow_forward3.79 Consider two samples. Sample A contains 2 moles of N2 and 1 mole of O2, and Sample B contains 1 mole of N2O5. (a) Which sample contains more molecules? (b) Which sample contains more oxygen atoms? (c) Which sample contains more nitrogen atoms?arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning