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Before arc welding was developed, a displacement reaction involving aluminum and iron(III) oxide was commonly used to produce molten iron (the thermite process; see photo). This reaction was used, for example, to connect sections of iron railroad track. Calculate the mass of molten iron produced when 1.46 kg aluminum reacts with 3.41 mol iron(III) oxide.

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Answer:

381.92g of iron

Explanation:

First, we determine the balanced reaction equation for the thermite process as this will guide our calculation. After that, we obtain the number of moles of aluminum reacted from the information provided. This shows that iron III oxide is the limiting reactant. Hence it is used to obtain the number of moles of iron and the mass of molten iron produced. Recall that the molar mass of molten iron is 56gmol-1. See image attached for details.

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