Plants require nitrogen fixed in compounds to grow. A higher the percentage of nitrogen results in improved plant growth. Which compound should you add to your fertilizer to get the best results.
OA. N2F2
OB. CONHA
Oc. (NH4)2SO4
OD. NH. NO

)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.