Astudent prepared a stock solution by dissolving 20.0 g of koh in enough water to make 150. ml of solution. she then took 15.0 ml of the stock solution and diluted it with enough water to make 65.0 ml of a final solution. what is the concentration of koh for the final solution?

the answer would be a

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.