Question

for problems 22 - 25, large amounts of nitrogen are used by the electronics industry to provide a gas blanket over a component during production. this ensures that undesired reactions with oxygen will not occur. classify each statement as an extensive property or intensive property of nitrogen. 22. nitrogen is a colorless gas. 23. a volume of 22.4 l of nitrogen gas weighs 28 g at 0°c. 24. liquid nitrogen boils at 77.4 k. 25. nitrogen gas has a density of 1.25 g/l at 0°c. for problems 26 - 28, oxygen is the third most abundant element in the universe and makes up about two - thirds of the human body. classify each statement as an extensive property or intensive property of oxygen. 26. liquid oxygen boils at 90.2 k. 27. liquid oxygen is pale blue. 28. a volume of 22.4 l of oxygen gas weighs 32 g at 0°c.

Explanation:

Intensive properties do not depend on the amount of substance, while extensive properties do. Color, boiling - point, and density are intensive as they are characteristic of the substance itself. Mass and volume relationships (like a specific volume having a certain mass) are extensive as they depend on the quantity of the substance.

• 22: Color is an intensive property.
• 23: Mass - volume relationship is extensive.
• 24: Boiling - point is intensive.
• 25: Density is intensive.
• 26: Boiling - point is intensive.
• 27: Color is intensive.
• 28: Mass - volume relationship is extensive.

Answer:

1. I
2. E
3. I
4. I
5. I
6. I
7. E