Due w/in this hour! Am I adding? Thank you.

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Compare and contrast refraction of light and sound will give brainliest

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?