Answer:
The answer would be Uranium-238
Explanation:
It's the only one that lasts longer than 40,000 years
What was part a ? there is no way we can answer without backstory .
An extensive property is a property that deals with the amount of a substance. An extensive property of marker ink would be the volume of the ink in the pen.
An intensive property is a property about the type of substance you're looking at. So, an intensive property of marker ink would be the color of the ink.
The reaction rate is the speed at which products form, based on the rate of the slowest step in the mechanism.
