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+// Example 15_19
+clc;funcprot(0);
+// Given data
+T=25;// °C
+p=0.1;// MPa
+
+// Calculation
+n_H2=1;// The stoichiometric coefficient of the reaction
+n_O2=0.5;// The stoichiometric coefficient of the reaction
+n_H2O=1;// The stoichiometric coefficient of the reaction
+g_f_H2O=-237.178;// MJ/kgmole
+// [(abar_f)_i]_chemical=gbar0_i+RT ln[1].
+abar_H2O=g_f_H2O;// MJ/kgmole
+adot_fc=0+0-[(n_H2O/n_H2)*abar_H2O];// The net molar specific flow availability in MJ/kgmoleH2
+printf("\nThe net molar specific flow availability of the hydrogen–oxygen fuel cell,(a_flow chemical)_net=%3.3f MJ/kgmoleH2",adot_fc);