Adh requires the presence of a nicotinamide adenine dinucleotide (nad+) molecule in order to catalyze the oxidation of an alcohol. because nad+ is converted to nadh and released, it is a cosubstrate of the reaction, and nadh is a coproduct. additionally, like many enzymes, adh requires a metal cation for catalysis, which in this case is zinc (zn2+). zn2+ is not altered by adh, nor is it tightly bound to the enzyme. which term best describes the role of zn2+ in the reaction catalyzed by adh? prosthetic group cofactor cosubstrate coenzyme

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Label a-f based on the table using c for concentrated and d for dilute

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers