设生成 x mol HNO3 3 4(2x + 18.0 × 5/4 + 12.0) = 150.0 x = 1.5(mol) NH 3 的转化率= (18.0 + 1.5)/20.0 × 100% = 97.5% ( 4 )① ② 3n(A) = [4n(B) - 500]/15