answer:
atomic number
the same chemical element is characterized by the number of protons in the nucleus that determines the total positive charge.
I believe it's 1,100 to 1,500 sunspots.
Explanation:
[H+]=10^-pH
[H+]=10^-9.2
[H+]=6.031x10^-10
[OH-]=1x10^-14÷[H+]
[OH-]=1x10^-14÷[6.031x10^-10]
[OH-]= 1.66x10^-5
im pretty sure this is right
The answer is carbon dioxide