Concept explainers
Interpretation:
The table is to be completed.
Concept introduction:
Answer to Problem 37E
The table is completed as shown below.
Gas | Molecules | Mass | STP Volume |
methane, |
|||
ethane, |
|||
propane, |
Explanation of Solution
The table to be completed is given below.
Gas | Molecules | Mass | STP Volume |
methane, |
|||
ethane, |
|||
propane, |
The number of molecules of methane,
The formula to determine the number of moles is given below.
The Avogadro’s number is
Substitute the number of molecules of
At STP,
The unit factors are given below.
Therefore, the volume occupied by
Therefore, the volume occupied at STP is
The molar mass of
The unit factor to calculate grams of
The formula to determine the mass of
Substitute the volume of
Therefore, the mass of
The mass of ethane,
The molar mass of ethane,
The formula to determine the number of moles is shown below.
Substitute the mass and molar mass of
At STP,
The unit factors are given below.
Therefore, the volume occupied by
Therefore, the volume occupied by
The number of molecules in
The number of molecules in
Therefore, the number of molecules of
The volume of propane,
At STP,
The number of moles of
At STP,
Therefore, the number of molecules in
Therefore, the number of molecules in
The molar mass of
Substitute the moles and molar mass of
Therefore, the mass of
The table is therefore completed as shown below.
Gas | Molecules | Mass | STP Volume |
methane, |
|||
ethane, |
|||
propane, |
The table is completed has been rightfully completed.
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Chapter 8 Solutions
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