A chemist adds 310.0 mL of a 8.9 x 10^-6 M silver(II) oxide solution to a reaction flask. Calculate the micromoles of silver (II) oxide the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?