Answer : The hydroxide ion concentration of a solution is, 
Explanation :
As we know that 
dissociates in water to give hydrogen ion 
and carbonate ion 
.
As, 1 mole of dissociates to give 1 mole of hydrogen ion
Or, 1 M of dissociates to give 1 M of hydrogen ion
So, 0.200 M of dissociates to give 0.200 M of hydrogen ion
Now we have to calculate the hydroxide ion concentration.
As we know that:
![[H^+][OH^-]=1\times 10^{-14}](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%5BOH%5E-%5D%3D1%5Ctimes%2010%5E%7B-14%7D)
![0.200\times [OH^-]=1\times 10^{-14}](https://tex.z-dn.net/?f=0.200%5Ctimes%20%5BOH%5E-%5D%3D1%5Ctimes%2010%5E%7B-14%7D)
![[OH^-]=5\times 10^{-14}](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D5%5Ctimes%2010%5E%7B-14%7D)
Therefore, the hydroxide ion concentration of a solution is,
A I think that a bar graph would best represent this information.
I believe the answer would be C. slows down, hope this helps:)
It’s mass number would be 5 as it’s the protons and the neutrons added together
Answer: Absolute dating is used to determine a precise age of a rock or fossil through radiometric dating methods. This uses radioactive minerals that occur in rocks and fossils almost like a geological clock. ... These isotopes break down at a constant rate over time through radioactive decay.
