How many oxygen atoms does 4 NH4(SO4)3 have?

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

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?

Aseismic wave is energy released as the result of rock movement along a fault. t or f ?