The molar mass of glycerin, or glycerol, with the chemical formula C3H8O3, can be calculated by adding up the atomic masses of all the atoms in its molecular formula.
For glycerin:
- Carbon (C): The atomic mass is approximately 12.01 g/mol. Since there are 3 carbon atoms, the total mass from carbon is: 3 × 12.01 g/mol = 36.03 g/mol.
- Hydrogen (H): The atomic mass is about 1.01 g/mol. With 8 hydrogen atoms, the total from hydrogen is: 8 × 1.01 g/mol = 8.08 g/mol.
- Oxygen (O): The atomic mass is roughly 16.00 g/mol. Since there are 3 oxygen atoms, the total mass from oxygen is: 3 × 16.00 g/mol = 48.00 g/mol.
Now, add these values together to get the overall molar mass:
36.03 g/mol (C) + 8.08 g/mol (H) + 48.00 g/mol (O) = 92.11 g/mol.
Thus, the molar mass of glycerin C3H8O3 is approximately 92.11 g/mol.