The molar mass of air is
.
Further Explanation:
The formula to calculate the mass of the component is as follows:
...... (1)
Air has three major components, namely, nitrogen, oxygen, and argon gas.
The percentage of nitrogen in the air is 78.08 %.
The molar mass of nitrogen gas is 28.02 g/mol.
Substitute these values in equation (1) to calculate the mass of nitrogen gas.
The percentage of oxygen in the air is 20.95 %.
The molar mass of oxygen gas is 31.99 g/mol.
Substitute these values in equation (1) to calculate the mass of oxygen gas.
The percentage of argon in the air is 0.97 %.
The molar mass of argon gas is 39.95 g/mol.
Substitute these values in equation (1) to calculate the mass of argon gas.
![\begin{aligned}{\text{Mass of oxygen gas}}&= \left( {\frac{{{\text{0}}{\text{.97 \% }}}}{{{\text{100 \% }}}}} \right)\left( {{\text{39}}{\text{.05 g/mol}}} \right)\\&= 0.38\;{\text{g/mol}}\\\end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%7B%5Ctext%7BMass%20of%20oxygen%20gas%7D%7D%26%3D%20%5Cleft%28%20%7B%5Cfrac%7B%7B%7B%5Ctext%7B0%7D%7D%7B%5Ctext%7B.97%20%5C%25%20%7D%7D%7D%7D%7B%7B%7B%5Ctext%7B100%20%5C%25%20%7D%7D%7D%7D%7D%20%5Cright%29%5Cleft%28%20%7B%7B%5Ctext%7B39%7D%7D%7B%5Ctext%7B.05%20g%2Fmol%7D%7D%7D%20%5Cright%29%5C%5C%26%3D%200.38%5C%3B%7B%5Ctext%7Bg%2Fmol%7D%7D%5C%5C%5Cend%7Baligned%7D)
The formula to calculate the molar mass of air is as follows:
...... (2)
The mass of nitrogen gas is 21.88 g/mol.
The mass of oxygen gas is 6.70 g/mol.
The mass of argon gas is 0.38 g/mol.
Substitute these values in equation (2).
Learn more:
- Calculate the moles of chlorine in 8 moles of carbon tetrachloride: brainly.com/question/3064603
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Answer Details:
Grade: Senior School
Chapter: Mole concept
Subject: Chemistry
Keywords: air, nitrogen, oxygen, argon, 28.96 /mol, 21.88 g/mol, 6.70 g/mol, 0.38 g/mol, molar mass, percentage, 100 %, 78.08 %, 20.95 %, 0.97 %.