Phase changes! a. write out the clapeyron equation and explain what it describes. b. write out the clausius-clapeyron equation and explain what it describes. c. calculate the boiling temperature of water at an elevation of 1700 m (approximately the height of boulder, co) where the atmospheric pressure is ~0.83 atm. you may use the fact that water boils at 373 k, 1 atm, and that the enthalpy of vaporization is 6.01 kj/mol.