Assuming That Air Is a Solution Containing Four Molecules of N₂

question 25

Multiple Choice

Assuming that air is a solution containing four molecules of N₂ for every one molecule O₂,what is the concentration of O₂ in this solution,expressed as % (m/m) ? [Formula weights: N₂,28.02 amu; O₂,32.00 amu]

• A)22% (m/m)
• B)47% (m/m)
• C)53% (m/m)
• D)78% (m/m)
• E)114% (m/m)

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Definitions:

Lot Size

The quantity of units produced or purchased in a single batch, which can be optimized to minimize costs and meet demand.

Aggregating

The process of combining multiple pieces of data or information into a single group or total, often used to simplify analysis or reporting.

Average Flow Time

The average time that it takes for a unit to move through a specific process or system, from start to finish.

Economic Order Quantity

A formula used to determine the optimal order size that minimizes the sum of ordering, holding, and stockout costs.