Answer: Option (b) is the correct answer.
Explanation:
It is known that,
pH + pOH = 14
So, pOH = 14 - pH
As the given pH is 9.3. Hence, pOH for the given solution will be calculated as follows.
pOH = 14 - 9.3
= 4.7
Therefore, pOH of the given solution is 4.7.
The action force is the weight of your body pressing on the chair:
The ACTION of sitting.
The reaction force comes from the chair against your body. It is equal to your weight:
The chair's REACTION to you sitting on it.