Interpretation: The empirical formula of a compound of iron and oxygen which yields 174 .86 g of Fe and 75 .14 g of O needs to be determined.
Concept introduction:
Empirical formula is the simplest ratio in a molecule. The ratio of empirical formula and molecular formula is a whole number.
Answer to Problem 68SSC
The empirical formula is
Explanation of Solution
Given information:
The mass of iron and oxygen elements is given as follows:
Iron
Oxygen
Calculation:
To determine the empirical formula, first calculate the number of moles of Fe and O as follows:
Molar mass of Fe and O is 55.84 g/mol and 16 g/mol. Thus, number of moles will be:
Dividing by smallest number of moles,
The formula will be
Therefore, the empirical formula is
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