Is any of this right? If not, please explain what I’m doing wrong.

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

Which of these conditions most likely produces an unstable isotope?

How do you convert 4 mmol of bromobenzene to ml?