Quick!! Please please help! What is the mass of 52.3 L of Fe2O3 ? Show your work please and thank you:)

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Which terms are used to identify pure substances

)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.