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Questions and Answers
Which gas makes up roughly 78 percent of the composition of air by volume?
Which gas makes up roughly 78 percent of the composition of air by volume?
- Oxygen (O2)
- Nitrogen (N2) (correct)
- Carbon Dioxide (CO2)
- Argon (Ar)
Under normal atmospheric conditions, at what temperature and pressure are gases defined?
Under normal atmospheric conditions, at what temperature and pressure are gases defined?
- $25°C$ and 0.5 atmosphere (atm) pressure
- $0°C$ and 1 atmosphere (atm) pressure
- $25°C$ and 1 atmosphere (atm) pressure (correct)
- $0°C$ and 0.5 atmosphere (atm) pressure
Which process is described as the gradual mixing of one gas with another?
Which process is described as the gradual mixing of one gas with another?
- Expansion
- Compression
- Diffusion (correct)
- Effusion
What is the percentage of oxygen in the composition of air by volume?
What is the percentage of oxygen in the composition of air by volume?
Which statement accurately describes the behavior of gases?
Which statement accurately describes the behavior of gases?
What is the total percentage of gases, other than N2 and O2, in the composition of air by volume?
What is the total percentage of gases, other than N2 and O2, in the composition of air by volume?
What is the process by which a gas under pressure escapes from one compartment of a container to another by passing through a small opening?
What is the process by which a gas under pressure escapes from one compartment of a container to another by passing through a small opening?
Under normal atmospheric conditions, how many elements are in the gas form?
Under normal atmospheric conditions, how many elements are in the gas form?
What is the approximate percentage of oxygen in the composition of air by volume?
What is the approximate percentage of oxygen in the composition of air by volume?
Which statement accurately describes the behavior of gases?
Which statement accurately describes the behavior of gases?
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