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October 2, 2014

Homework Help: Chemistry

Posted by Marie on Sunday, December 9, 2012 at 2:10pm.

Magnetite, an iron ore with formula Fe3O4, can be reduced by treatment with hydrogen to yield iron metal and water vapor.
(a) Write the balanced equation. (Use the lowest possible coefficients.)
1Fe3O4(s) + 4H2(g)-> 3Fe(s) + 4H2O(g)

(b) This process requires 36 kcal for every 1.00 mol of Fe3O4 reduced. How much energy (in kilocalories) is required to produce 63 g of iron?
. kcal

(c) How many grams of hydrogen are needed to produce 69 g of iron?
. g

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