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Balance the following chemical equation and determine the number of moles of Fe(s) produced when 0.75...


...oo Verizon LTE 9:43 PM HQ4.09 HQ4.09 2017-02-13 Balance the following chemical equation and determine the number of moles of Fe(s) produced when 0.75 moles of Fe2 O3 (s) react with excess C(s) to produce Fe(s) and CO2 (g). LLLL Fe2O3 (s) LLLC (s) -LLL Fe(s) Co 2 (g) Multiple Choice A 1.50 moles B 0.75 moles 3.50 moles D 4.50 moles Submit
Balance the following chemical equation and determine the number of moles of Fe(s) produced when 0.75 moles of Fe_2O_3 (s) react with excess C(s) to produce Fe(s) and CO_2(g). Multiple Choice 1.50 moles 0.75 moles 3.50 moles 4.50 moles Submit
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Answer #1

2Fe2O3(s) + 3C(s) --------------> 4Fe(s) + 3CO2 (g)

First balance the number of oxygens multiplying by 3 x CO2 and 2 x Fe2O3 followed by carbon and Fe in the last step.

2Fe2O3(s) + 3C(s) --------------> 4Fe(s) + 3CO2 (g)

Stoichiometrically, 2 mol 3 mol 4 mol 3 mol

2 moles of Fe2O3 react with excess C to produce 4 moles of Fe

1 mole of Fe2O3 reacts with excess C to produce 4/2=2 moles of Fe

0.75 moles of Fe2O3 react with excess C to produce 2*0.75= 1.50 moles of Fe

Answer is A

:-)

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