Please help fast! I will give brainliest if correct. Thanks.

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.

The rules of engagement (roe) working group is often used to (select all that apply.)

The excretory system, need answers for all: )