What would seasons be like if the revolution around the sun took 2 years

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

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?