Chemistry, 22.08.2020 02:01 cat7167

O alumínio é utilizado como redutor de óxidos, no processo de nominado de aluminotermia, conforme mostra a equação química: 8 Al(s) + 3 Mn3O4(s) → 4 Al2O3(s) + 9Mn(s) Dados: Al2O3(s) H=-1667,8; Mn3O4(s) H= -1385,3 Segundo a equação acima, para a obtenção do Mn(s), qual será a variação de entalpia, em KJ?

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