Write an equation for how ammonia is formed in the Haber process.
The Haber process is normally run at a high pressure ranging from $60$ to $200$ atmospheres (from $60 \times 10^5\,\text{Pa}$ to $200 \times 10^5\,\text{Pa}$). State two other key operating conditions used in the Haber process. For each one, explain why it is chosen.
State one large-scale use of ammonia, other than in the manufacture of nitrogenous fertilisers.
The careless use of nitrogenous fertilisers can harm lakes and streams. This is called eutrophication. What processes happen when excessive quantities of nitrogenous fertilisers enter lakes and streams?
Outline how each of these pollutants may be formed in an internal combustion engine. CO NO
State the main hazard linked to each of these pollutants. CO NO
Which metal is most often used as the catalyst in a catalytic converter?
Construct one balanced equation showing how a catalytic converter removes both CO and NO from exhaust gases.