Various iron ores have different amounts of iron per kilogram of ore. Calculate the mass percent composition of iron for each iron ore: Fe2O3(hematite), Fe3O4(magnetite), FeCO3(siderite). Which ore has the highest iron content

Fe3O4(Magnetite)

Explanation:

The mass percent composition of iron for Fe2O3(hematite):

% Fe = 111.70g/159.70g X 100% = 69.944%

The mass percent composition of iron for Fe3O4(magnetite):

72.359%

The mass percent composition of iron for FeCO3(siderite):

48.203%

Thus, Magnetite ore Fe3O4 has the highest iron content i.e. 72.359%

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.