You are performing an experiment and produce an unidentified compound. You know it is composed of carbon, calcium, and oxygen but you do not know how many of each are present. You determine its relative formula mass is 100.1 g/mol. What is its molecular formula? A. Ca2CO

B. CaCO3

C. Ca2C2O2

D. all of these

)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.