How many grams of potassium hydroxide (KOH) are needed to prepare 400. mL of a 0.500 Mpotassium hydroxide solution?

If you used the method of initial rates to obtain the order for no2, predict what reaction rates you would measure in the beginning of the reaction for initial concentrations of 0.200 m, 0.100 m, & 0.050 m no2.