Answer:
54.616
Explanation:
8.647 + 45.969
or rewrite for easier look:
45.969 +
8.647 =
54.616
Hope this helped :3
Answer:
I think its A maybe am not sure
The volume of a gas varies inversely with pressure is the definition of Boyle's Law.
Answer : The concentration of
ion is, 
Solution : Given,
pH = 4.20
First we have to calculate the pOH.
As we know that,




Now we have to calculate the concentration of
ion.
![pOH=-\log [OH^-]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%20%5BOH%5E-%5D)
![9.8=-\log [OH^-]](https://tex.z-dn.net/?f=9.8%3D-%5Clog%20%5BOH%5E-%5D)
![[OH^-]=1.58\times 10^{-10}M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D1.58%5Ctimes%2010%5E%7B-10%7DM)
Therefore, the concentration of
ion is, 