(b) Calculate the amount of iron that can be extracted from 2000 tonnes of haernatíte.
(Relative atomic masses: O = 16; Fe = 56)

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons