Determinar la energia potencial de un cuerpo que partiendo del reposo cae desde una altura de 50 mtrs cuya masa es de 10 kg

Why do sodium and neon have vastly different chemical and physical properties despite having similar atomic masses?

How are elements arranged in a periodic table

)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.