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An adiabatic vessel contains 1 kg of liquid aluminium at 700°C. Some Cr2O3 at 25°C was added into it, which cause the following exothermic reaction to occur:
2Al(l) + Cr2O3(s) = 2Cr(s) + Al2O3(s)
The final temperature was 1000°C, and the final product mixture consisted Al2O3(s), Cr(s) and some unreacted Cr2O3(s). Calculate the weight of Cr2O3 addition.
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