To the nearest whole number, what percentage of clean, dry air is N$_2$?
Name the process by which O$_2$ is separated from clean, dry air.
State one important harmful effect of the pollutant SO$_2$.
Describe the way oxides of nitrogen are formed in a car engine.
Identify these products and state which metal catalyst is used.
Write a chemical equation that shows the incomplete combustion of methane.
State the scientific names for process A and process B.
Complete the diagram so that it shows the complex carbohydrate made from three glucose units. Include all of the atoms and all of the bonds in the linkages.
State two methods by which complex carbohydrates can be broken down into simple sugars.
Name one suitable technique for separating and identifying the individual sugars produced when complex carbohydrates are broken down.