Cobalt has an oxidation number of 3 (III) in the compound Co2O3.
Co2(CO3)3The chemical formula of cobalt(III) carbonate [not cobalt(111)] is Co2(CO3)3.
3 apex
Balanced :2 Co2O3 + 3 C ----> 4 Co + 3CO2
Co2S3also written asCo_2_S_3_sulfide 2- charge trades with the Cobalt 3+ charge
Cobalt has an oxidation number of 3 (III) in the compound Co2O3.
Co2(CO3)3The chemical formula of cobalt(III) carbonate [not cobalt(111)] is Co2(CO3)3.
Co2O3
3 apex
In the compound Co2O3 cobalt has an oxidation number of 3 while oxygen has an oxidation number is -2.
TiCO3 is the chemical formula of titanium carbonate.
Take into account that oxygen has a negative 2 charge (O-2) and there are 3 of them; therefore, to form this compound Cobalt must have a positive 3 charge (Co3+) because there are 2 of them. The name of this compound is Cobalt (III) oxide or Cobaltic oxide.
Balanced :2 Co2O3 + 3 C ----> 4 Co + 3CO2
Some chemical compouds of cobalt are: CoF2, CoF3, CoF4, CoCl2, CoCl3, CoBr2, CoI2, CoF2, CoO, CO2O3, CO3O4, CoS, CoSe, CoTe, CoS2, Co2S3, Co(NO3)2, CoSO4, Co3(PO4)2, etc.
Co2S3also written asCo_2_S_3_sulfide 2- charge trades with the Cobalt 3+ charge
The formula CoO3 has 4 atoms: 1 cobalt and three oxygen. That said, I'm doubtful that that compound actually exists. CoO and Co3O4 both definitely do, Co2O3 is probable but less certain, but the oxidation states involved in those are all reasonable ones for cobalt; +6 would be unusual to say the least.
Molar mass of cobalt III sulfate is 406.04 (g.mol-1)How it's done:Establish the molecular formula: Co2(SO4)3Then:Add up all atom mass's2 * 58.93 = 117.86 (for 2 Cobalt)3 * ( 32.06 + 4*16.00 )= 288.18 (for 3 Sulfate)Finally:Totalize: 406.04