Concept explainers
(a)
Interpretation:
The
Concept introduction:
Mole is a basic unit used in the International system of units (SI). It is abbreviated as
Answer to Problem 34E
The number of atoms in
Explanation of Solution
The molar mass of iodine atom is
Therefore, one mole of iodine atom is
The number of moles in
The number of atoms in iodine atom is calculated as shown below.
Substitute the number of atoms of iodine atom in above equation as shown below.
The number of atoms in
(b)
Interpretation:
The number of molecules in
Concept introduction:
Mole is a basic unit used in the International system of units (SI). It is abbreviated as
Answer to Problem 34E
The number of molecules in
Explanation of Solution
The molecular formula is
The molar mass of carbon is
The molar mass of hydrogen is
The molar mass of
Therefore, the molar mass of
This means 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:
Mole is a basic unit used in the International system of units (SI). It is abbreviated as
Answer to Problem 34E
The number of formula units in
Explanation of Solution
The molecular formula for manganese
The molar mass of manganese is
The molar mass of oxygen is
The molar mass of carbon is
The molar mass of
Therefore, the molar mass of
This means one mole of
The number of moles in
The number of formula units in
The number of formula units in
Want to see more full solutions like this?
Chapter 7 Solutions
Introductory Chemistry: An Active Learning Approach
- In what units are atomic, molecular, and formula mass expressed? Define those units.arrow_forwardQuestions 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_forward
- The platinum-containing cancer drug cisplatin (Study Question 35) contains 65.0 mass-percent of the metal. If you have 1.53 g of the compound, what mass of platinum (in grams) is contained in this sample?arrow_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_forwardIt may be said that because atomic, molecular, and formula masses are all based on carbon-12, they are conceptually alike. What then are their differences?arrow_forward
- Please help mearrow_forwardA certain chemical substance has the following percent composition by mass. Element Mass Percent carbon 25.29% hydrogen 3.891% bromine 56.08% nitrogen 14.75% Determine the empirical formula for the compound.Enter your answer without subscripts. C12H21Cl3 should be entered as C12H21Cl3. Enter elements in the order C, H, followed by the remaining elements alphabetically. Single elements do not need to have a subscript. CH4 should be entered as CH4, not C1H4.Empirical Formula: Answerarrow_forwardA compound is found to contain 15.94 % boron and 84.06 % fluorine by mass.What is the empirical formula for this compound?To answer the question, enter the elements in the order presented above.arrow_forward
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher: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
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning