September 2023 1 7 Report
1) Qué masa de carbono está presente en 200 g de CaCO₃. m.A.(C=12 uma ; O=16 uma ; Ca=40 uma)
-12 g
-6 g
-30 g
-24 g

2) Señalar una sal oxisal: *
-NaOH
-HCl(ac)
-H₂CO₃
-CaSO₄

3 y 4:

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