Consider two acids: cl2chco2h (dichloroacetic acid, pka = 1.3) and hco2h (formic acid, pka = 3.8). which acid has the larger ka? select the single best answer.

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Which three statements represent the benefits of performing experiments using computer simulations?

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.