The reason you need a balanced chemical equation to do stoichiometric calculations is: A: so the equation won’t tip over
B: so the actual yield can be calculated
C: so you have the correct mole ratio( switchover step)
D: so you can calculate the number of grams.

)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.

How many grams of sodium chloride are in 250ml of a 2.5m naci solution

H2o is a single atom of wat true or false?