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1. Calcule la masa frmula del yodito de calcio Ca(IO2)2 en uma. 2. Calcula el nmero de tomos en una muestra de silicio de 2,93x10^23g.

1. Calcule la masa frmula del yodito de calcio Ca(IO2)2 en uma.
2. Calcula el nmero de tomos en una muestra de silicio de 2,93x10^23g.
3. Cuntos tomos hay en 0,920 g de P2O5?
4. Cul es la masa (en gramos) de 9,92x10^24 molculas de metanol (CH3OH)?

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