how many moles of 02 must react with 0.23 moles of NH3 in the reaction below? please help and show your work! ​

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

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?

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium