
Interpretation:
The mass percent of each type of atom present has to be determined. The empirical formula of the material has to be determined.
Concept Introduction:
Mass percentage:
It represents the concentration of an element in a compound or a mixture. Mathematically, it can be represented as follows,
Mass percentage
Where,

Answer to Problem 88QRT
The mass percent of each type of atom present are
Explanation of Solution
Given that, typical cement contains
From the empirical formula of
The mass percent of
Molecular mass of
Similarly, for others the same calculation can be done.
Molecular mass | |
Calculation of mass percentage:
Mass percentage of oxygen:
A
Calculation of moles:
Mole ratio:
Divide by the lowest value , here
The empirical formula:
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Chapter 9 Solutions
Chemistry: The Molecular Science
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