6.Answer the following questions about BaC2O4 and its hydrate:
A. calculate the mass percent of carbon in the hydrated form of the solid that has the fromula BaC2O4 * 3H2O
[mass 2C/mass BaC2O4*3H2O]*100 =
To calculate the mass percent of carbon in the hydrated form of BaC2O4 * 3H2O, you need to know the molar masses of carbon and BaC2O4 * 3H2O.
1. Calculate the molar mass of BaC2O4 * 3H2O:
- Molar mass of Ba = 137.33 g/mol (from the periodic table)
- Molar mass of C = 12.01 g/mol (from the periodic table)
- Molar mass of O = 16.00 g/mol (from the periodic table)
- Molar mass of H = 1.01 g/mol (from the periodic table)
The molar mass of BaC2O4 * 3H2O is:
137.33 + 2 * 12.01 + 4 * 16.00 + 3 * (2 * 1.01 + 16.00) = 245.34 g/mol
2. Calculate the molar mass of carbon in BaC2O4 * 3H2O:
- Carbon atoms in BaC2O4 * 3H2O: 2
- Molar mass of carbon in BaC2O4 * 3H2O is:
2 * 12.01 = 24.02 g/mol
3. Calculate the mass percent of carbon in BaC2O4 * 3H2O:
- Mass of carbon in BaC2O4 * 3H2O: 24.02 g
- Mass of BaC2O4 * 3H2O: 245.34 g
The mass percent of carbon in BaC2O4 * 3H2O is:
(24.02 g / 245.34 g) * 100% = 9.8%
Therefore, the mass percent of carbon in the hydrated form of BaC2O4 is approximately 9.8%.