Consider a solution made from a nonvolatile solute and a volatile solvent. Which statement is true? a) The vapor pressure of the solution is always greater than the vapor pressure of the pure solvent.
b) The boiling point of the solution is always greater than the boiling point of the pure solvent.
c) The freezing point of the solution is always greater than the freezing point of the pure solvent.

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?

Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.

Floor 19 is an isotope of fluorine it has different number a. electrons b. protons c. neutrons d.electron shells