Answer:
YIKES. a bit late. Answers include 1, 2, 3
Explanation:
Answer: 8.57 ml of KOH is required to reach the equivalence point.
Explanation:
To calculate the volume of acid, we use the equation given by neutralization reaction:

where,
are the n-factor, molarity and volume of acid which is 
are the n-factor, molarity and volume of base which is KOH.
We are given:

Putting values in above equation, we get:

Thus 8.57 ml of KOH is required to reach the equivalence point.
Answer:
it represents the numner of protons in an atoms nucleus
They are not always identical because they have different isotope numbers which develops different neutrons numbers