An aqueous solution contains 0.24 M ammonia. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.12 mol HI O 0.25 mol HI 0.12 mol Ca(OH)2 D 0.24 mol BaCl, □ 0.25 mol NH4Cl

Which of the following aqueous solutions are good buffer systems?(more than one answer maybe required) a) 0.40 M sodium bromide + 0.30 M calcium bromide b) 0.25 M ammonia + 0.31 M barium hydroxide c) 0.14 M hypochlorous acid + 0.17 M sodium hypochlorite d) 0.25 M hydrochloric acid + 0.23 M potassium chloride e) 0.14 M potassium hydroxide + 0.24 M potassium chloride

The overall adenylate kinase reaction (2 ADP = AMP + ATP) is a combination of 3 reactions: ATP hydrolysis, pyrophosphate hydrolysis, and ATP formation. Show each step and provide the standard free energy (ΔG°′) for each and the overall reaction. If the adenylate kinase reaction is at equilibrium and intracellular [ATP] = 5 mM and [ADP] = 0.5 mM, calculate the concentration of AMP at pH 7 and 25 °C. Show all work. ATP (ADP+P) = -30.5 kj/mol; ATP (AMP+PP) = -45.6 kj/mol; PP = -19.2 kj/mol

An aqueous solution contains 0.32 M potassium fluoride.One liter of this solution could be converted into a buffer by the addition of:(Assume that the volume remains constant as each substance is added. More than one answer maybe required.) a) 0.32 mol HNO3 b) 0.15 mol HNO3 c) 0.31 mol HF d) 0.31 mol KI e) 0.15 mol KOH