a) C6(H2O)6

b) Refer to hard copy of exercise sheet

c) No. Different isomers have different physical and chemical properties, hence they should have different sweetness.

Everything in existence is a chemical. It is impossible to have a chemical-free diet because even the local and organic diet are doubled with BPA and high toxic phthalate DEHP. It is only possible to reduce using plastic in cooking storage and preparation, and focus on fresh and low fat food to minimise exposure to BPA and phthalates.