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
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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
- Which 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
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