Answer to Question #24961 in Inorganic Chemistry for jordan
How many grams of Fe3O4 are needed to react with 8.8 x1022 molecules of CO?
1
2013-02-25T11:14:12-0500
The chemical equation for this reaction isFe3O4 + 4CO --> 3Fe + 4CO2
According to Avogadro law: n(moles) = N/Na ( N - the number of
molecules, Na - 6.02 x 10^23)
n(CO) = (8.8 x 10^22)/(6.02 x 10^23) = 0.146 moles
According to equation n(Fe3O4) = n(CO)/4
n(Fe3O4) = 0.146/4 = 0.0365 moles
m(grams) = MW x n(moles)
MW(Fe3O4) = 3 x MW(Fe) + 4 x MW(O) = 3 x 55.8 + 4 x 16.0 = 231.4 grams/mol
m(Fe3O4) = 231.4 x 0.0365 = 8.45 grams
Answer: m(Fe3O4) = 8.45 grams
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