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NemiM [27]
3 years ago
5

In a very violent reaction called a thermite reaction, aluminum metal reacts with iron (III) oxide to form iron metal and alumin

um oxide according to the following equation:
Chemistry
1 answer:
leva [86]3 years ago
3 0
Here's the equation:
<span>Fe2 O3 + 2Al → 2Fe + Al2 O3 
</span>
Here's the question.
What mass of Al will react with 150g of Fe2 O3? 

<span>In every 2 moles Al you need 1 mole Fe2O3 </span>

<span>moles = mass / molar mass </span>
<span>moles Fe2O3 = 150 g / 159.69 g/mol </span>
<span>= 0.9393 moles </span>

<span>moles Al needed = 2 x moles Fe2O3 </span>
<span>= 2 x 0.9393 mol </span>
<span>= 1.879 moles Al needed </span>

<span>mass = molar mass x moles </span>
<span>mass Al = 26.98 g/mol x 1.879 mol </span>
<span>= 50.69 g </span>
<span>= 51 g (2 sig figs) 
</span>
So the <span>mass of Al that will react with 150g of Fe2 O3 is 51 grams.</span>
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