Butyric acid contains only C,H and O. A 4.24 mg sample of butyric acid is completely burned. It gives 8.45 mg of carbon dioxide (CO2) and 3.46 mg of water. What is the mass percentage of each element in butyric acid?The molecular mass of butyric acid was determined by experiment to be88. What is the molecular formula?
% | %/at.wt.=Factor | Factor/Lowest number |
C=54.2 | 54.212=4.52 | 4.522.29=2 |
H=9.2 | 9.21=9.2 | 9.22.29=4 |
O=36.6 | 36.616=2.29 | 2.292.29=1 |