1. Which one of the following best describe sublimation? A. A solid melting to a liquid which re solidifies.

B. A solid melting to a liquid which evaporates, the vapor condensing to a liquid and then recrystallizing.

C. The movement of gaseous particles so that they fill the spaces that they occupy.

D. A solid forming a vapor on heating and reforming as a solid on cooling.

E. The bombardment of large molecules by small molecules.

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.

)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.

Which tool is least in predicting weather