Determine the empirical formula of a compound that contains 30.45% nitrogen and 69.55% oxygen

I might not be right but I think the empirical formula is NO2

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !