Lena772
  • Lena772
Aluminum metal reacts with Iron(III) oxide to produce Iron metal and Aluminum oxide. What mass (in grams) of Aluminum metal will react with 1.50E2 g of Iron(III) oxide?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Lena772
  • Lena772
@hartnn @texaschic101
Lena772
  • Lena772
@Nnesha @sammixboo @UsukiDoll @Jack1
Lena772
  • Lena772
\[Fe _{2}O _{3}+2Al \rightarrow Al _{2} O3+2Fe\]

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aaronq
  • aaronq
so you wrote the formula and balanced it. the next step required is to convert the mass given to moles. after, use a molar ratio - of the moles and coefficients of each species: \(\sf \dfrac{moles~of~A}{A's~coefficient}=\dfrac{moles~of~B}{B's~coefficient}\) solve for moles of Al. Convert moles to mass.
Lena772
  • Lena772
What are the moles of each substance @aaronq ?
aaronq
  • aaronq
The problem tells you the mass of Fe2O3, convert that to moles. The moles of Al are unknown, so you will be solving for them - they would be your "x"
Lena772
  • Lena772
(1.50E2gFe2O3 * 1 mol) / 159.69 g Fe2O3 = 0.939 mol Fe2O3
Lena772
  • Lena772
(0.939 mol Fe2O3 * 2 mol Al) / 1 mol Fe203 = 1.878 mol Al
Lena772
  • Lena772
1.878 mol Al *26.981g Al / 1 mol Al = 50.67g Al
Lena772
  • Lena772
Would 50.8 be correct considering sig figs?
aaronq
  • aaronq
50.7 g, no?
Lena772
  • Lena772
sorry. so 50.7 is correct?
aaronq
  • aaronq
yes, it should be

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