Concept explainers
(a)
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 32E
The number of formula units in
Explanation of Solution
The molecular formula for beryllium nitrate is
The molar mass of nitrogen is
The molar mass of oxygen is
The molar mass of beryllium is
The molar mass of
Therefore, the molar 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
(b)
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 32E
The number of formula units in
Explanation of Solution
The molar mass of manganese atom is
Thus, one mole of manganese is
The number of moles in
The number of formula units in manganese is calculated below.
Substitute the number of moles of manganese in the above equation.
The number of formula units in
(c)
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 32E
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
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_forwardn chemistry, what is meant by the term mole? What is the importance of the mole concept?arrow_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
- Question attachedarrow_forwardWith complete solutionsarrow_forwardA compound is found to contain 10.37 % phosphorus , 4.689 % nitrogen , and 84.95 % iodine by mass. To answer the question, enter the elements in the order presented above. QUESTION 1: The empirical formula for this compound is QUESTION 2: The molar mass for this compound is 298.8 g/mol. The molecular formula for this compound isarrow_forward
- Please help mearrow_forwardA compound is found to contain 26.96 % sulfur , 13.45 % oxygen , and 59.59 % chlorine by mass. To answer the question, enter the elements in the order presented above. QUESTION 1: The empirical formula for this compound is QUESTION 2: The molar mass for this compound is 119.0 g/mol. The molecular formula for this compound isarrow_forwardA certain chemical substance has the following percent composition by mass. Element Mass Percent carbon 41.34% hydrogen 1.927% chlorine 40.67% nitrogen 16.07% 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_forward
- A compound is found to contain 55.39 % boron , 8.280 % hydrogen , and 36.33 % chlorine by mass. To answer the question, enter the elements in the order presented above. QUESTION 1: The empirical formula for this compound is QUESTION 2: The molar mass for this compound is 97.58 g/mol. The molecular formula for this compound isarrow_forwardWrite out the conversion factor of the given element in the given compound using the mass percent composition. A) Propane is 81.68% carbon by mass. B) Ethylene is 14.14% hydrogen by mass. C) Aluminium oxide is 52.9% Aluminum by mass.arrow_forwardA compound is found to contain 18.28 % phosphorus , 18.93 % sulfur , and 62.78 % chlorine by mass.To answer the question, enter the elements in the order presented above.QUESTION 1: The empirical formula for this compound is ??? . QUESTION 2:The molar mass for this compound is 169.4 g/mol. The molecular formula for this compound is ???? .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 CoIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning