(a)
Interpretation: To calculate the molar mass of the given substance.
Concept Introduction: Molar mass is defined as the smallest unit of the compound. It is the
(a)
Answer to Problem 115A
158 g/mol.
Explanation of Solution
The given molecular compound is
There is only one calcium atom in the given compound. The molar mass of calcium atom is 40 g/mol.
There are six hydrogen atoms in the given compound. The molar mass of one hydrogen atom is 1 g/mol. Therefore, the molar mass of six hydrogen atoms will be
There are four carbon atoms in the given compound. The molar mass of one carbon atom is 12 g/mol. Therefore, the molar mass of four carbon atoms will be
There are four oxygen atoms in the given compound. The molar mass of one oxygen atom is 16 g/mol. Therefore, the molar mass of four oxygen atoms will be
Therefore, the molar mass of the compound will be 158 g/mol.
(b)
Interpretation: To calculate the molar mass of the given substance.
Concept Introduction: Molar mass is defined as the smallest unit of the compound. It is the
(b)
Answer to Problem 115A
98 g/mol
Explanation of Solution
There are three hydrogen atoms in the given compound. The molar mass of one hydrogen atom is 1 g/mol. Therefore, the molar mass of three hydrogen atoms will be
There is only one phosphorous atom in the given compound. The molar mass of Phosphorous atom is 31 g/mol.
There are four oxygen atoms in the given compound. The molar mass of one oxygen atom is 16 g/mol. Therefore, the molar mass of four oxygen atoms will be
The overall molar mass of the compound will be 98 g/mol
(c)
Interpretation: To calculate the molar mass of the given substance.
Concept Introduction: Molar mass is defined as the smallest unit of the compound. It is the
(c)
Answer to Problem 115A
342 g/mol.
Explanation of Solution
There are twelve carbon atoms in the given compound. The molar mass of one carbon atom is 12 g/mol. Therefore, the molar mass of twelve carbon atoms will be
There are 22 hydrogen atoms in the given compound. The molar mass of one hydrogen atom is 1 g/mol. Therefore, the molar mass of 22 hydrogen atoms will be
There are eleven oxygen atoms in the given compound. The molar mass of one oxygen atom is 16 g/mol. Therefore, the molar mass of eleven oxygen atoms will be
The overall molar mass of the compound will be 342 g/mol.
(d)
Interpretation: To calculate the molar mass of the given substance.
Concept Introduction: Molar mass is defined as the smallest unit of the compound. It is the
(d)
Answer to Problem 115A
331 g/mol
Explanation of Solution
There is one lead atom in the given compound. The molar mass of the lead atom is 207 g/mol.
There are two nitrogen atoms in the given compound. The molar mass of one nitrogen atom is 14 g/mol. Therefore, the molar mass of the two nitrogen atoms will be
There are six oxygen atoms in the given compound. The molar mass of one oxygen atom is 16 g/mol. Therefore, the molar mass of six oxygen atoms will be
The overall molar mass of the given compound will be 331 g/mol
Chapter 14 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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