Which radiation has the lower frequency: (a) radio waves from an AM radio station broadcasting at 1030 kHz or (b) the red light (2. = 633 nm) from a helium-neon laser?

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?