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colettemaeve
Jan 14, 2011, 06:15 PM
How much copper is in 4.827mol of copper(II)
Chloride?
Answer in units of g.


A sample of an ore of iron, hematite, is 52%
Fe2O3. How much iron is there in 8 kilograms
Of the ore?
Answer in units of g.

I've tried both several times and cannot get them!! Please help!

DrBob1
Jan 14, 2011, 07:40 PM
How many grams of Cu are in one mole of CuO? There will be 4.827 times as much in 4.827 moles of CuO!
If hematite is 52% Fe2O3, how many grams of Fe2O3 are in 8kg of hematite? How many moles is that? Keep on like in the first part.