Answer
122 grams/mol is the formula weight of benzoic acid.
Work Step by Step
1 molecule of Benzoic acid consists of the following elements:
6 Hydrogen atoms
7 Carbon atoms
2 Oxygen atoms
Each atom must then be multiplied by it's specific atomic weight, the total of all of the atoms weights times their masses will yield the formula weight
6 Hydrogen atoms X 1 amu
7 Carbon atoms X 12 amu
2 Oxygen atoms X 16 amu
=122amu
This answer than must be converted into grams per mol.
For every 1 amu we have 1 gram/mol in the compound.
Therefore your final answer 122 grams per mol.
