Chemistry

in the reaction of aluminium and iron (III) oxide to form iron and aluminium oxide, H-850 kJ. how many grams of aluminium oxide are formed when 350 kJ are released?
2Al(s) + Fe2O3 -- Fe(s) + Al2O3(s) H=-850 kJ

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  1. Is that delta H for the reaction as written? If so then,
    molar mass Al2O3 x (350/850) = ?

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  2. 84g is one of the options.

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