Urea (ch4n2o) is a common fertilizer that can be synthesized by the reaction of ammonia (nh3) with carbon dioxide as follows: 2nh3(aq)+co2(aq)→ch4n2o(aq)+h2o(l) in an industrial synthesis of urea, a chemist combines 133. 0 kg of ammonia with 211. 4 kg of carbon dioxide and obtains 173. 0 kg of urea.