What is calgon ? Give its chemical formula

What is permutit ? Give its chemical formula.

What is a chemical formula?

what is plaster of Paris. give its chemical formula?

Potassium hexachloroplatinate (IV) is given with the chemical formula

Calgon is

why are some salts are called hydrated salts give 2 example of white colour hydrated salts with the chemical formula?

What are the rules you have to follow while writing a chemical formula?

What are antimicrobials ? Give the general formulae and derivatives of penicillin.

What is bleaching powder? Write its formula.