The pka values of a compound with two ionizable groups are pk1 = 4. 10 and pk2 between 7 and 10. A biochemist has 10 ml of a 1. 0 m solution of this compound at a ph of 8. 0. She adds 10. 0 ml of 1. 00 m hcl, which changes the ph to 3. 20. What is pk2?.

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

Which early modernism trend in art focused on prehistoric or exotic cultures? a. primitivism b. expressionism c. impressionism d. total serialism