Find the mass of cobalt is 12 and the mass of fluoride which is 19 and then add them which will be 50.
Since you're looking for Cobalt only, it will be 12 times 100% divided by 50 which will then give the percentage of 24%.
*why divide by 50, because it is the mass of the whole chemical.
The mass percentage of cobalt in Cobalt(II) fluoride is 60.8%
From the question,
We are to determine the mass percentage of Cobalt (Co) in Cobalt(II) fluoride (CoF₂)
The mass percentage of Cobalt in the Cobalt(II) fluoride can be determined using the formula
[tex]Mass\ percentage\ of\ Co= \frac{Atomic\ mass\ of\ Co}{Molar\ mass\ of\ CoF_{2} } \times 100\%[/tex]
Atomic mass of Co = 58.93 g/mol
Molar mass of CoF₂ = 96.93 g/mol
∴ Mass percentage of Co = [tex]\frac{58.93}{96.93}\times 100\%[/tex]
Mass percentage of Co = [tex]\frac{5893}{96.93}\%[/tex]
Mass percentage of Co = 60.79645%
Mass percentage of Co ≅ 60.8%
Hence, the mass percentage of cobalt in Cobalt(II) fluoride is 60.8%
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