What is formula for chromium (iii) phosphate trihydrate and cobalt (ii) phosphate octahydrate

1. Chromium (III) phosphate trihydrate: CrPO₄•3H₂O

2. Cobalt (II) phosphate octahydrate: Co₃(PO₄)₂•8H₂O

Explanation:

Chromium (III) phosphate is an inorganic chemical compound having the chemical formula CrPO₄, in which the chromium metal is present in the +3 oxidation state. The anhydrous chromium (III) phosphate is green in color.

The trihydrate chromium (III) phosphate has the chemical formula CrPO₄•3H₂O.

Cobalt (II) phosphate, also called cobalt violet, is an inorganic chemical compound having the chemical formula Co₃(PO₄)₂, in which cobalt is present in +2 oxidation state.

The octahydrate cobalt (II) phosphate has the chemical formula Co₃(PO₄)₂•8H₂O

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

14,16 18 reacts with group