Consider the reaction that converts pyruvic acid (CH3COCOOH) into gaseous acetaldehyde ( CH3CHO ) and gaseous CO2 , which is catalyzed in aqueous solution by the enzyme pyruvate decarboxylase. Assume ideal gas behavior for CO2 . 98 Chapter 3 | The Second Law: The Entropy of the Universe Increases a. Calculate !rG"(298 K) for this reaction. b. Calculate !rG(298 K) for this reaction at 100 bar. State any important assumptions needed in addition to ideal

The diagram below shows a cell placed in a solution. a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution. only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it. it will expand as water moves into it. it will shrink as water moves into it.

Imagine that twenty i. u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?

Which metals are called noble metals