How can I calculate the molar mass?
1 Answer
Sep 30, 2014
To calculate the molar mass of a compound, first determine the number of atoms of each type in each molecule and then add up the atomic masses.
Example: Find the molar mass of ethanol,
Each molecule in this compound has 2 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom. The atomic masses, from the periodic table of elements are:
C - 12.011 g/mol
H - 1.008 g/mol
O - 15.999 g/mol
The molar mass of ethanol is then
