An electrician cuts a 10-meter-long copper wire having a density 8.9 g/cm3 into 10 equal parts. what is the density of each small part? one-tenth of 8.9 g/cm3 since density is an intensive property one-tenth of 8.9 g/cm3 since density is an extensive property 8.9 g/cm3 since density is an intensive property 8.9 g/cm3 since density is an extensive property

- The density of an object is the ratio of its mass and volume.

 

- Both mass and volume are extensive properties.

 

- The ratio of two extensive properties of the same substance, system or object is an intensive property.

 

Therefore, density is an intensive property.

 

- Intensive properties are those which remain unchanged regardless of the quantity of matter being measured.

 

Therefore, the density will remain 8.9 g/cm3

 

ANSWER - The density of each small part is 8.9 g/cm3 since density is an intensive property

But roughly 2.45 billion years ago, the isotopic ratio of sulfur transformed, indicating that for the first time oxygen was becoming a significant component of Earth's atmosphere, according to a 2000 paper in Science. At roughly the same time (and for eons thereafter), oxidized iron began to appear in ancient soils and bands of iron were deposited on the seafloor, a product of reactions with oxygen in the seawater."What it looks like is that oxygen was first produced somewhere around 2.7 billion to 2.8 billon years ago."It looks as if there's a significant time interval between the appearance of oxygen-producing organisms and the actual oxygenation of the atmosphere."