Concept explainers
Interpretation:
The molecular formula for the silicon-fluorine compound from the mass percentage is to be determined.
Concept introduction:
The formula to find an amount(mol) is:
An empirical formula gives the simplest whole number ratio of atoms of each element present in a compound. The molecular formula tells the exact number of atoms of each element present in a compound.
Following are the steps to determine the molecular formula of a compound.
Step 1: Add the molar mass of each element multiplied by its number of atoms present in the empirical formula to obtain the empirical formula mass for the compound.
Step 2: Divide the molar mass of the compound by its empirical formula mass to obtain the whole number. The formula to calculate the whole number multiple is as follows:
Step 3: Multiply the whole number with the subscript of each element present in the empirical formula. This gives the molecular formula of the compound.

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Chapter 5 Solutions
CHEMISTRY:MOLECULAR...(LL) W/ALEKS
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