Answer:
- <em><u>pH </u></em><u>= 9.73</u>
<u></u>
Explanation:
<em>pOH</em> is the negative logarithm of the molar <em>concentration</em> of<em> hydroxide ions </em>and pH is the negative logarithm of the concentration of hydronium ions.
The mathematical expression to determine pOH is:
![pOH=-\log [OH^-]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%20%5BOH%5E-%5D)
Where [OH⁻] means the molar concentration of hydroxide ions.
Substituting:


<em>pH </em>and <em>pOH</em> are related by the equation:

From which:

C. 14
you would subtract the mass number from the protons or the atomic number because in order to find the mass number you would add the protons and neutrons :)