Which is true of the products in this combustion reaction? 4fe + 3o2 2fe2o3

a. the products contain 4 iron atoms and 6 oxygen atoms.

b. the products are located to the left of the arrow in the chemical equation.
c. the products have the same physical and chemical properties as the reactants.
d. the products are the atoms, molecules, or compounds that participate in the reaction.

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.