Hydrogen and oxygen are dissociated from {HEAD ~ water} by converting water to steam and contacting {TAIL ~ the steam} with resin or oil 
by contacting
Hydrogen and oxygen are dissociated from { HEAD ~ water } by converting water to steam and contacting { TAIL ~ the steam } with resin or oil
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH