Concept explainers
Interpretation:
Molecular formula of the compound with
Concept Introduction:
An ideal gas contains a large number of randomly moving particles that are supposed to have perfectly elastic collisions among themselves. It is a theoretical concept. Gases that show perfect elastic collision are practically not possible. At higher
Here,
Empirical formula represents simplest positive integer ratio of atoms in the compound. It only gives proportions of elements in compound. Molecular formula consists of chemical symbols for the respective elements followed by numeric subscript that denotes the number of atom of each element present in molecule.

Answer to Problem 3B.39E
Chemical formula of hydrocarbon is
Explanation of Solution
Replace all
The expression to relate number of moles, mass and molar mass of
Substitute
The expression to relate number of moles, mass and molar mass of
Substitute
The expression to relate number of moles, mass and molar mass of
Substitute
Preliminary formula for compound is formed with moles of
Each of subscript of
The conversion factor to convert
Expression for ideal gas equation is as follows:
Rearrange equation (4) to calculate
Substitute
The expression to relate number of moles, mass and molar mass of
Rearrange in equation (6) to calculate molar mass of
Substitute
Mass from empirical formula can be calculated as follows:
Molar mass and empirical formula are related by formula as follows:
Rearrange equation (8) to calculate
Substitute
Molecular formula of the compound that has
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Chapter 3 Solutions
ACHIEVE/CHEMICAL PRINCIPLES ACCESS 2TERM
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