Fe
2
O
3

+

2
Al
=

2
Fe
+
Al
2
O
3
How many moles of Al are in
5
3
.
9
6
g
?
What mass of Fe
2
O
3
would you need to react with the Al
?

Question

Fe
2
O
3
 
+
 
2
Al 
=
 
2
Fe 
+
 ﻿Al
2
O
3
 ﻿ How many moles of Al are in 
5
3
.
9
6
 ﻿g
?
 ﻿What mass of Fe
2
O
3
 ﻿would you need to react with the Al
?

Accepted Answer

∻Solution∻ ‖ 1 ⋮ **Calculate the moles of Al**: To find the moles of aluminum (Al) in 53.96 g, we first need to calculate the molar mass of Al. The molar mass of Al is $26.98 ext{ g/mol}$. The number of moles is calculated by dividing the mass by the molar mass: $\frac{53.96 ext{ g}}{26.98 ext{ g/mol}}$. ‖ ‖ 2 ⋮ **Calculate the mass of Fe2O3 needed**: From the balanced equation $Fe_2O_3 + 2Al ightarrow 2Fe + Al_2O_3$, we see that 1 mole of $Fe_2O_3$ reacts with 2 moles of Al. Using the moles of Al calculated in step 1, we can find the moles of $Fe_2O_3$ needed by dividing the moles of Al by 2. Then, we multiply the moles of $Fe_2O_3$ by its molar mass (159.69 g/mol) to find the mass required. ‖ ∻1 Answer∻ ⚹ 2 moles of Al ⚹ ∻2 Answer∻ ⚹ [Insert mass of Fe2O3 here] ⚹ ∻Key Concept∻ ⚹ Stoichiometry and molar mass are used to relate the mass of one substance to the moles of another in a chemical reaction. ⚹ ∻Explanation∻ ⚹ The number of moles of Al is found by dividing the given mass by the molar mass of Al. The mass of Fe2O3 needed is then calculated using the stoichiometric ratio from the balanced chemical equation. ⚹◊What is the molar mass of Fe2O3 and Al?⍭ Generate me a similar question◊

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