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Firefox File Edit View History Bookmarks Yahoo! Tools Window Help O S 63% D Fri Mar 13 12 21 PM a E to WWN7496 Homework 8 d... x ii 3 smartwork wwnorton.co m/sw/mod/smartwork/view.php?id-354737 a Search YAHOO M Yahoo Search LIVE Print calculator Periodic Table Ebook Question 7 of 14 (1 point) COAST Tutorial Problem The mineral magnetite (Fe304) is magnetic, whereas iron (ll) oxide is not. (a) Write and balance the chemical equation for the formation of magnetite from iron oxide and oxygen. Use the smallest whole number coefficients. Include phases in the balanced chemical equation. Type an open parenthesis to add a phase. Phases should not be subscripted. Use the left and right arrow keys to move the cursor out of a superscript or subscript in the module (b) Given that 318 kJ of heat are released for each mole of F formed, what is the enthalpy change of the balanced reaction of formation of Fe3O4 from iron oxide and oxygen? umber kJ v Check Answer View Solution Hint 4 5 6 7 8 10 Record my Grade Progress Activit v Grade. T 4 Points possihle the n 1 state mole

Explanation / Answer

a) 6 FeO (s) + O2 (g) ----------------> 2 Fe3O4(s)

b) for each mole of Fe3O4 is 318 kJ heat

for 2 moles of Fe3O4     ----------- 2x 318= 636kJ

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