Soda lime is a mixture of sodium oxide (Na2O) and calcium oxide (CaO). Starch is a polysaccharide composed of glucose units. The elemental composition of soda lime and starch is as follows:

Soda lime:

- Sodium (Na): 32.5%

- Calcium (Ca): 29.4%

- Oxygen (O): 38.1%

Starch:

- Carbon (C): 44.4%

- Hydrogen (H): 6.2%

- Oxygen (O): 49.4%