What is the % Oxygen in or the compound Cobalt V Carbonate? Co2(CO3)5

The % Oxygen in the compound Cobalt V Carbonate : 57.42%

Given

Compound Cobalt V Carbonate- Co₂(CO₃)₅

Required

% composition of Oxygen

Solution

Number of Oxygen in Co₂(CO₃)₅ = 3 x 5 = 15

Molar mass of Cobalt V Carbonate- Co₂(CO₃)₅ :

=2.Ar Co + 5.Ar C+15. Ar O

=2.59 + 5.12 + 15.16

= 118+60+240

=418 g/mol

% Oxygen = (15.Ar O / MW Co₂(CO₃)₅) x 100%

% Oxygen = (240/418) x 1005

% Oxygen = 57.42

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.