1. What are physical and chemical properties of metals, nonmetals, and metalloids?

)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.

Ill give u brainliest pls how is mass of carbon conserved during cellular respiration

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond