TITLE Our own calculation of Rainwater evaporation
SOLUTION 1 Precipitation of rainfall in the Mediterranean
        units           mg/L
        pH              4.5   # estimated
        temp            25.0
        Ca              .384
        Mg              .043
        Na              .141
        K               .036
        Cl              .956
        C(4)            .1      CO2(g)  -3.5
        S(6)            1.3
        N(-3)           .208
        N(5)            .237
EQUILIBRIUM_PHASES 1 Equilibrate with Minerals and gas
        CO2(g)          -1.5 # write the partial pressure log(CO2)
        Calcite         0.0  # this is the saturation index at equ.
EXCHANGE 1
        X   0.075
        -equilibrate with solution 1
SAVE solution 2
SELECTED_OUTPUT 
        -file ex4-evp.txt 
        -temperature 
        -pH
	  -molalities H+ OH- Ca+2 CO2  HCO3-  CO3-2	
        -saturation_indices	Calcite Gypsum Siderite
        -gases			CO2(g)  N2(g) 
END

TITLE Evaporate water
USE Solution 2
REACTION 1 evaporation
	  H2O     -1.0
        # All Calculations of the program are for 1 kg of water
        # 1 kg of water has 55 moles. Why: 1 mol H20 = 18 g
        # 1000 / 18 = 55.555555
        # Remove 90 % of the inital water: evaporate 90 % of rainfall
        # 0.9 * 1000 / 18 = 50
        50.0  51.0 52.0 53.0 54.0 55.0 moles
SAVE SOLUTION 3
END