题目

The news of his appointment filtered out before it was (official) advertised. 答案：【1】officially（6分）实验室常加热氯化铵与氢氧化钙固体制取氨气，写出该反应的化学方程式：                         ，可用                        来检验氨气，现要制得2.24L（标况）氨气，理论上需要氯化铵固体            g。（相对原子质量：N-14  H-1Cl-35.5）