Which unit is used to express oxygen capacity in the described system?

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Multiple Choice

Which unit is used to express oxygen capacity in the described system?

Explanation:
Oxygen capacity is a measure of how much gas by volume the system can hold. The best unit for this is liters because it directly expresses volume, making it easy to compare how much oxygen is available. Kilograms would describe mass, not volume, which doesn’t tell you how much gas you have. While gallons and cubic meters are volume units, liters are the standard reference in most oxygen storage specifications and practical calculations, so they fit the described system best.

Oxygen capacity is a measure of how much gas by volume the system can hold. The best unit for this is liters because it directly expresses volume, making it easy to compare how much oxygen is available. Kilograms would describe mass, not volume, which doesn’t tell you how much gas you have. While gallons and cubic meters are volume units, liters are the standard reference in most oxygen storage specifications and practical calculations, so they fit the described system best.

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