Job Recruitment Website - Zhaopincom - (2005? Luzhou) Read the materials and packaging instructions and answer the following questions: Materials: In a small warehouse in the southern countryside, a batch of bagged chemicals are piled up.

(2005? Luzhou) Read the materials and packaging instructions and answer the following questions: Materials: In a small warehouse in the southern countryside, a batch of bagged chemicals are piled up.

(1) In summer, less ammonium bicarbonate is stored in the warehouse, because it is unstable and easily decomposed when heated.

So the answer is: decomposition;

(2) Plant nutrient elements include nitrogen, phosphorus and potassium, which contain nitrogen according to the chemical formula of ammonium bicarbonate;

So the answer is: nitrogen;

(3) Ammonium bicarbonate reacts with hot lime to generate ammonia, calcium carbonate and water. The reaction equation is: ca (oh) 2+nh4co3 ═ CaCO3 ↓+NH3 ↑+2h2o.

So the answer is: ca (oh) 2+nh4hco3 ═ CaCO3 ↓+NH3 ↑+2h2o.

(4) The mass ratio of nitrogen, hydrogen, carbon and oxygen:14: (1× 5):12: (16× 3) =14: 5:/kloc-0.

So the answer is: 14: 5: 12: 48.

(5) The mass fraction of nitrogen in ammonium bicarbonate is1479×100% ≈17.7%.

The mass of nitrogen in 50Kg ammonium bicarbonate is 50 kg× 17.7% ≈ 8.9 kg.

So the answer is: 8.9.