This question has not an answer because is not complete.
Half of 2.4 L given in mL is 1200 mL
Adding 20 mL fresh pure water to fresh pure water: the pH remain unchanged.
1900 ml
That is 3.75 ml.
Float
Float
29.57 ml
5
10
That is 839,000 ml.
That is 3,070 ml
That is 1,500 ml.