An enzyme contains an active site aspartic acid with a pka=5.0, which acts as a general acid catalyst. draw the curve of enzyme activity (reaction rate) versus ph for the enzyme (assume the protein is stably folded between ph 2-12 and that the active site asp is the only ionizable residue involved in catalysis). briefly explain the shape of the curve.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant