1. (a) State the equation for the complete combustion of octane.
2. (b) Calculate the mass of oxygen which reacts with 1.00 g of octane during complete combustion.
3. (c) Assume that 20% by mass of the air is made up of oxygen. Calculate the mass of air which reacts with 1.00 g of octane.
4. (d) Explain why carbon monoxide is a dangerous pollutant.
5. (e) State one method of controlling carbon monoxide emissions from automobile engines.