In: Chemistry
Give the empirical formula of each of the following compounds if a sample contains the following quantities of each element. (Type your answer using the format CO2 for CO2.)
(a) 0.0455 mol C, 0.039 mol H, and 0.013 mol O
(b) 6.44 g nitrogen and 3.67 g oxygen
(c) 69.9% iron and 30.1% oxygen by mass