What is the percentage by mass of H in CH\(_3\)COOH ?
- 1.7%
- 5.0%
-
6.7%
- 7.1%
The correct answer is: C
Explanation
- molecular mass (or molar mass) is 60.05 g/mol
- with 4 atoms of hydrogen present
( 4 / 60 ) X 100
≈6.7%