How many moles of ammonium hydroxide are present in 140.0 g of the substance?

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?

Which states of matter have particles that move independently of one another with very little attraction?

Rays from the sun are not considered matter true or false