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Verified answer
calcular mol:
As = 75.74 g/ 74.92 g/mol = 1.011 mol
O = 24.26 g / 16 g/mol = 1.516 mol
dividir entre el menor de los resultados
As: 1.011 mol / 1.011 mol = 1 x 2 = 2
O: 1.516 mol / 1.011 mol = 1.5 x 2 = 3
se multiplica por 2 debido a que uno de los resultados es un decimal
FE: As2O3