
Concept explainers
Calculate, to two decimal places, the formula mass of each of the following substances. Obtain the needed
- a. C12H22O11 (sucrose, table sugar)
- b. C7H16 (heptane, a component of gasoline)
- c. C7H5NO3S (saccharin, an artificial sweetener)
- d. (NH4)2SO4 (ammonium sulfate, a lawn fertilizer)
(a)

Interpretation:
Formula mass of
Concept Introduction:
Sum of atomic masses of all the atoms that are represented in chemical formula of substance is known as formula mass. If atomic mass and chemical formula of a compound is known, then formula mass can be calculated.
Answer to Problem 6.1EP
Formula mass of sucrose is
Explanation of Solution
Given chemical formula is
The formula mass of sucrose is calculated as
Formula mass of sucrose is calculated.
(b)

Interpretation:
Formula mass of
Concept Introduction:
Sum of atomic masses of all the atoms that are represented in chemical formula of substance is known as formula mass. If atomic mass and chemical formula of a compound is known, then formula mass can be calculated.
Answer to Problem 6.1EP
Formula mass of heptane is
Explanation of Solution
Given chemical formula is
The formula mass of heptane is calculated as
Formula mass of heptane is calculated.
(c)

Interpretation:
Formula mass of
Concept Introduction:
Sum of atomic masses of all the atoms that are represented in chemical formula of substance is known as formula mass. If atomic mass and chemical formula of a compound is known, then formula mass can be calculated.
Answer to Problem 6.1EP
Formula mass of saccharin is
Explanation of Solution
Given chemical formula is
The formula mass of saccharin is calculated as
Formula mass of saccharin is calculated.
(d)

Interpretation:
Formula mass of
Concept Introduction:
Sum of atomic masses of all the atoms that are represented in chemical formula of substance is known as formula mass. If atomic mass and chemical formula of a compound is known, then formula mass can be calculated.
Answer to Problem 6.1EP
Formula mass of ammonium sulfate is
Explanation of Solution
Given chemical formula is
The formula mass of ammonium sulfate is calculated as
Formula mass of ammonium sulfate is calculated.
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Chapter 6 Solutions
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