Calculate the Mass Percentage of Oxygen in Co2(C2O4)3

How to calculate the mass percentage of oxygen in Co2(C2O4)3?

What is the formula to determine the mass % oxygen in Co2(C2O4)3 (MM = 382)?

Calculating the Mass Percentage of Oxygen in Co2(C2O4)3

The mass % oxygen in Co2(C2O4)3 (MM = 382) is approximately 65.35%.

To calculate the mass % oxygen in Co2(C2O4)3 (MM = 382), we need to determine the mass of the compound and the mass of oxygen present in it.

Calculating the mass of Co2(C2O4)3: We need to know the mass of cobalt, carbon, and oxygen atoms in the compound to calculate the mass of Co2(C2O4)3. The atomic weights of cobalt, carbon, and oxygen are 58.93, 12.01, and 16.00 respectively. Cobalt is present in the compound as Co2, and carbon is present as C2O4.

To calculate the mass of Co2(C2O4)3, we can add the mass of Co2 and twice the mass of C2O4.

Mass of Co2 = 2 × 58.93 = 117.86 g/mol

Mass of C2O4 = 2 × 12.01 + 4 × 16.00 = 88.02 g/mol

Mass of Co2(C2O4)3 = 117.86 + 2 × 88.02 = 293.9 g/mol

Calculating the mass of oxygen in Co2(C2O4)3: There are 3 C2O4 units in Co2(C2O4)3, which contain 3 × 4 = 12 oxygen atoms. Therefore, the mass of oxygen in Co2(C2O4)3 is:

Mass of oxygen = 12 × 16.00 = 192 g/mol

Calculating the mass % oxygen in Co2(C2O4)3:

Mass % oxygen = (mass of oxygen/mass of Co2(C2O4)3) × 100% = (192/293.9) × 100% ≈ 65.35%

Therefore, the mass % oxygen in Co2(C2O4)3 (MM = 382) is approximately 65.35%.