problem  rocket  equilibrium  o/f=2,3,4,5,6,7,8,9  
p,psia=2970.000 supar=68.8
      reactants   
fuel = H2(L)  wt% 100.   t(k) 20.27 
oxid = O2(L)  wt% 100.   t(k) 90.17 
      output  siunits
      end