What is the molecular formula if the empirical formula is #C_3H_7#, and the experimental molar mass is 86 g/mole?
1 Answer
May 31, 2016
Explanation:
Brute force method:
- find molar mass of the empirical formula you are given
- set it equal to 86g/mol
- multiply it until you get 86g/mol
in this case:
C=12.01
N=14
H=1.008
the empirical formula adds up to 43g/mol
multiply by two, we get 86g/mol
