A. MULTIPLE CHOICE. Read the question and statement below and write your
answers in your activity notebook.
1. Many fish, insects, and including the common housefly, produce large amounts
of Glycerol (CH3Oa) in cold areas to lower the freezing point of their blood. What
percent of oxygen is present in glycerol?
A. 52.11%
B. 51.11%
C. 53.11%
D. 50.11%
2. Which of the following calculations is NOT part of determining the percentage
composition?
A. molar mass
B. atomic mass
C. no. of atoms
D. empi formula
3. What is the percent composition for carbon and hydrogen in ethane, C2H6?
A. 33% C and 66% H
B. 80% C and 20% H
C. 20% C and 80% H
D. 20% C and 60%H​