An element whose general formula for higher oxide is EO3 forms an evaporating hydrogen compound in which the mass fraction of hydrogen is 2.47% .What element is it?

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound