To calculate the molar mass of ethanol (C2H5OH or CH3CH2OH), we need to sum the molar masses of all the atoms in the molecule:
- Carbon (C): 2 atoms × 12.01 g/mol = 24.02 g/mol
- Hydrogen (H): 6 atoms × 1.01 g/mol = 6.06 g/mol
- Oxygen (O): 1 atom × 16.00 g/mol = 16.00 g/mol
Now, add these values together:
\[ 24.02 , \text{g/mol} + 6.06 , \text{g/mol} + 16.00 , \text{g/mol} = 46.08 , \text{g/mol} \]
Thus, the molar mass of ethanol is 46.08 grams.