A chemist prepares a solution of potassium dichromate (K.C,0,) by measuring out 6.17 jimol of potassium dichromate into a 50 mL volumetric task and filling the flask to the mark with water Calculate the concentration in movL of the chemist's potassium dichromate solution. Round your answer to 2 significant digits. mol Ammonia (NH) chemically reacts with oxygen gas (02) to produce nitric oxide (NO) and water (H20). What mass of nitric oxide is produced by the reaction of 8.38 g of oxygen gas? Round your answer to 3 significant digits. 0. X 5