Which statement best describes the relationship between the nervous system and the muscular system? 1. The nervous system controls the muscular system. 2. The muscular system controls the nervous system. 3. The nervous system provides nutrients and oxygen for the muscular system 4. The muscular system provides nutrients and oxygen for the nervous system

)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.