Answer:
The rock is 3.75 billion years ago.
Explanation:
Given that:
Half life = 1.25 billion years
1 billion years = 10⁹ years
So,
Half life = 1.25 × 10⁹ years
Where, k is rate constant
So,
The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹
Initial amount [A₀] = 80 micrograms
Final amount ![[A_t]](https://tex.z-dn.net/?f=%5BA_t%5D)
= 10 micrograms
Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D)
So,
So,
<u>The rock is 3.75 billion years ago.</u>
Answer:
true is the correct answer
Explanation:
- Asexual reproduction is a type of reproduction in which offspring produced are genetically identical to parent because a single parent is required for this type of reproduction.
- The most common asexual reproduction in gardening is cutting in this process piece of plant is used for asexual reproduction.
- Cutting is a method used during the vegetative propagation where a part of the parent plant's stem is rooted in a proper growing medium and forming it to produce a fresh plant.
An iqv of .35, which describes the level of racial diversity in a southern u.s. state, can be interpreted as 'the southern state of interest sees 35% of the maximum possible differences'.
The index of qualitative variation (IQV) is a measure of the variability of nominal variables such as race, ethnicity, and gender. This type of variable classifies people into categories that cannot be ranked, as opposed to being able to measure income and education that changes from high to low. The index of qualitative variation can vary from 0.00 to 1.00. If we want to look at the changing racial diversity of a place over period of time, we can use the IQV to see how diversity has evolved.
Know more about index of qualitative variation here
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