What are the independent and dependent variables in this experiment?
Mass is the independent variable, and boiling point is the dependent variable.
Boiling point is the independent variable, and mass is the dependent variable.
There are two independent variables and no dependent variables.
There are two dependent variables and no independent variables.

Explain why scientists use shared characteristics to make cladograms.

In salt water solution,the salt is the blank

)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.