Concept explainers
(a)
Interpretation:
The number of molecules in
Concept introduction:
A mole is a basic unit that is used in the International system of units (SI). It is abbreviated as
Answer to Problem 33E
The number of molecules in
Explanation of Solution
The molecular formula for iodine molecule is
The molar mass of iodine is
The molar mass of
Therefore, the molar mass of
Thus, one mole of iodine is
The number of moles in
The number of molecules in iodine is calculated below.
Substitute the number of moles of iodine in the above equation.
The number of molecules in
(b)
Interpretation:
The number of molecules in
Concept introduction:
A mole is a basic unit that is used in the International system of units (SI). It is abbreviated as
Answer to Problem 33E
The number of molecules in
Explanation of Solution
The molecular formula is
The molar mass of carbon is
The molar mass of oxygen is
The molar mass of hydrogen is
The molar mass of
Therefore, the molar mass of
Thus one mole of
The number of moles in
The number of molecules in
Substitute the number of moles of
The number of molecules in
(c)
Interpretation:
The number of formula units in
Concept introduction:
A mole is a basic unit that is used in the International system of units (SI). It is abbreviated as
Answer to Problem 33E
The number of formula units in
Explanation of Solution
The molecular formula for chromium
The molar mass of chromium is
The molar mass of oxygen is
The molar mass of sulfur is
The molar mass of
The formula mass of
Thus, one mole of
The number of moles in
The number of formula units in
Substitute the number of moles of
The number of formula units in
Want to see more full solutions like this?
Chapter 7 Solutions
EBK INTRODUCTORY CHEMISTRY: AN ACTIVE L
- Questions 23 to 26: Find the number of moles for each mass of substance given. a 53.8g beryllium b 781gC3H4Cl4 c 0.756g calcium hydroxide d 9.94g cobalt (III) bromide e 8.80g ammonium dichromate dichromate ion, Cr2O72 f 28.3g magnesium perchloratearrow_forwardQuestions 27 to 30: Calculate the mass of each substance from the number of moles given. a 0.542mol sodium hydrogen carbonate b 0.0789mol silver nitrate c 9.61mol sodium hydrogen phosphate d 0.903mol calcium bromate e 1.14mol ammonium sulfitearrow_forwardQuestions 35 and 36:Calculate the mass of each of the following. a 4.301021 molecules of C19H37COOH b 8.671024 atoms of flourine c 7.231023 formula units of nickel (II) chloridearrow_forward
- In what units are atomic, molecular, and formula mass expressed? Define those units.arrow_forwardQuestions 27 to 30: Calculate the mass of each substance from the number of moles given. a 0.379mol lithium sulfate b 4.82mol potassium oxalate oxalate ion, C2O42 c 0.132mol lead (II) nitratearrow_forward2.37 Why are empirical formulas preferred for describing polymer molecules?arrow_forward
- Questions 35 and 36: Calculate the mass of each of the following. a 2.581023 formula units of iron (II) oxide b 8.671024 molecules of fluorine c 7.361023 atoms of gold (Z=79)arrow_forwardQuestions 27 to 30: Calculate the mass of each substance from the number of moles given. a 0.819mol manganese (IV) oxide b 8.48mol aluminum chlorate c 0.926mol chromium (II) chloridearrow_forwardWhich of the three terms atomic mass, molecular mass, or formula mass is most appropriate for each of the following: ammonia, calcium oxide, barium, chlorine, sodium carbonate?arrow_forward
- Complete the following table. l> Mass of Sample Moles of Sample Molecules in Sample Atoms in Sample 4.24 g msp;C6H6 0.224 mol msp;H2O msp;2.711022 molecules msp;CO2 1.26 mol HCl td> msp;2.211024 molecules msp;H2O 0.297 g msp;CH3OHarrow_forwardQuestions 27 to 30: Calculate the mass of each substance from the number of moles given. a 0.769mol lithium chloride b 57.1mol acetic acid, HC2H3O2 c 0.68mol lithium d 0.532mol iron (III) sulfate e 8.26mol sodium acetate acetate ion, C2H3O2arrow_forwardDetermine the formula or molecular mass of each substance in the following list: a Nitrogen trifluoride b Barium chloride c Lead (II) phosphatearrow_forward
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning