|By Rsxman (Rsxman) on Wednesday, October 06, 2004 - 08:19 pm: Edit|
Anyone now how to do the problem?
Manganese is a key component of extremely hard steel. The element occurs naturally in many oxides. A 542.3-g sample of a manganese oxide mixture has an Mn molar ratio of 1.00:1.42 and consists of braunite (Mn2O3) and manganosite (MnO).
What is the mass per cent of braunite in the ore?
I was thinking of taking the mole mass of braunite and divide that by the mass of mixture.
But that didn't give me the right answer.
|By Theapprentice (Theapprentice) on Thursday, October 07, 2004 - 02:53 am: Edit|
make a system of equations
between the atomic weight of the braunite and manganosite(Weight1 X % + Weight2 X %) = 542..
the other equation ill let u think about....
it helps to struggle with these- i just understood them
hint: use the ratio@
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