Clasifique las propiedades del potasio como químicas o físicas a) es ductil y maleable
b) se oxida rápidamente en el aire
c) el punto de fusion es 3636,53 k
d) metal de color blanco plateado
e) reacciona explosivamente con el agua
f) conduce débilmente la electricidad

Which position represents spring in the southern hemisphere? a) b) c) d)

How many atoms are there in 5.70 mol of mg

)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.