The bracket just separate an atom or the ion and in the above it means there are two hydroxide molecules
so bracket function is just to separate ions and molecules
hope it helps
Lymphocytes, this is the white blood cell that identifies these pathogens
Explanation:
this is because of the electrolysis and the hydrogen and oxygen the experiments and all that the conditions are all right you know that song
Fe: 2 x 55.845 = 111.69
O: 3 x 15.9994= 47.9982
111.69 + 47.9982 = 159.69 g/mol
