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Un compuesto desconocido contiene 38,7 % de calcio, 19,9 % de fsforo y 41,2 % de oxgeno. Cul es la frmula emprica de este compuesto?

A.Ca2PO4

B Ca3PO6

C Ca4P2O4

D. Ca3P2O8 (o Ca3(PO4)2)

E CaPO4

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