2 NH3 + 4 O2 --> 2 NO + 3 H2O
2 NO + O2 --> NO2
2 NO2 + 1/2 O2 + H2O --> 2 HNO3(aq)
... 1980 Paul Anka 1981 Joni Mitchell 1982 Neil Young 1983 Glenn Gould 1986 Gordon Lightfoot 1987 The Guess Who[?] 1989 The Band 1990 Maureen Forrester[?] ...