What is the mass percent composition of Fe2O3? Given molar m…

What is the mass percent composition of Fe2O3? Given molar masses: Fe: 55.85  O: 16.00                A.        69.94 % Fe and 30.06 % O             B.        34.97 % Fe and 65.03 % O             C.        77.73 % Fe and 22.27 % O             D.        44.99 %Fe and 55.01 % O             E.         65.03 % Fe and 34.97 % O

Calculate the molar mass of aluminum chlorate: Al(ClO3)3 usi…

Calculate the molar mass of aluminum chlorate: Al(ClO3)3 using the given molar masses of  elements: Al: 26.98  Cl: 35.45 O: 16.00               A.     229.33 g/mol                   B.     78.43 g/mol             C.     283.33 g/mol D.     277.33 g/mol    E.      431.33 g/mol 

Ethylene glycol has a density of 1.11 g/mL. What is the volu…

Ethylene glycol has a density of 1.11 g/mL. What is the volume occupied by 20.0 g of ethylene glycol?               A.        22.2 mL             B.        27.0 mL             C.        18.0 mL             D.        0.0555 mL             E.        20.0 mL