An oxide of cobalt has the formula Co2O3
Which cobalt ion is present in this oxide?

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.

c (diamond),

sio2 (quartz)

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