For a weak acid such as the side chain ε-amino group of a lysine residue in a protein, if the pka of that specific residue's ε-amino group is exactly 10.0, in an environment in which the ph = 9.0, what would be the ratio of base to acid?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What effect might melting sea ice have for people who live in coastal areas?

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2