Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.

Find the empirical formula of the compound which contains C=16.27% , H= 0.68 % and Cl= 72.20 %

If the analysis of a hydrocarbons is 85.6 % carbon and 14.4% hydrogen. Its empirical formula is

The simplest formula of a compound containing 50% of x (atomic mass =10)and 50% of element y (atomic mass = 20 ) is

Explain the terms percentage composition, empirical formula and molecular formula.

Calculate the concentration of nitric acid in moles per litre in a sample which has a density. 1.41 g mL^1 and the mass percent of nitric acid in it being 69%.

Give the formula of a compound in which carbon exhibit an oxidation state of (1) +4 (2) +2 (3) -4

A domain in ferromagneticiron isin the form of a cube of side 1 pm. Estimate the number of iron atoms in the domain maximum possible dipole moment and magnetization of the domain. The molecular mass of iron is 55frac(g)(mole) and density is 7.9 frac(g)(cm^3) . Assume that each iron atom has a dipole moment of 9.27xx10^(-24) Am^2 .

One of the reaction that takes place in producing steel from iron ore is the reduction of iron(II) oxide by carbon monoxide to give iron metal and CO_2 . FeO(s) + CO(g) hArr Fe(s) + CO_2(g),K_p. =0.265 atm at 1050 K.What are the equilibrium partial pressures of CO and CO_2 at 1050K if the initial partial pressures are: Pco = 1.4 atm and Pco_2 = 0.80 atm?