Problem 1. Assuming a liquid water-vapor isotope fractionation factor (a liquid-vapor =Rliquid/Rvapor) at 25C is 1.076 and 1.0092 for 2H/'H and 180/160, respectively, calculate: (a) 8H and 8180 values of atmospheric vapor just above and at isotopic equilibrium with the equatorial Pacific Oceans with 8H and 8180 values of 2.0 and 0.5 %o, respectively (b) 8H and 8180 values of first water droplet that forms in isotope equilibrium from an mass of atmospheric moisture with 8H and 8180 values of -80.0 and -13.0 %o, respectively