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1. Expresar porcentajes en gramos
79.90g K
29.10g S
2. Calcular n° moles
n°mol= g÷masa molar
molK= 79.90g ÷ 40g/mol= 2mol
molS= 29.10 ÷ 32g/mol= 1 mol
La formula empirica de K es K2 y de S es S