# Problem: Chromium metal can be produced from the high temperature reaction of Cr 2O3 [chromium(III) oxide] with silicon or aluminum by each of the following reactions: Cr2O3 + 2Al → 2Cr + Al2O3 2Cr2O3 + 3Si →  4Cr + 3SiO2 Calculate the number of grams of aluminum required to prepare 133 g of chromium metal by the first reaction. Calculate the number of grams of silicon required to prepare 133 g of chromium metal by the second reaction.

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###### FREE Expert Solution
90% (333 ratings)
###### Problem Details

Chromium metal can be produced from the high temperature reaction of Cr 2O3 [chromium(III) oxide] with silicon or aluminum by each of the following reactions:

Cr2O3 + 2Al → 2Cr + Al2O3

2Cr2O3 + 3Si →  4Cr + 3SiO2

Calculate the number of grams of aluminum required to prepare 133 g of chromium metal by the first reaction.

Calculate the number of grams of silicon required to prepare 133 g of chromium metal by the second reaction.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

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Our tutors rated the difficulty ofChromium metal can be produced from the high temperature rea...as medium difficulty.

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Based on our data, we think this problem is relevant for Professor Thoemke's class at Minnesota State University - Mankato.