Which of the following is true regarding current in an external circuit

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.

Nonpoint source pollution is difficult to control because it

Which factor is likely to impact the possible number of compounds ?