Question

The molecular mass of oxygen is 32. What does this indicate?

• A. The molecule of oxygen is 32 times lighter than that of C-12 atom.
• B. The molecule of oxygen is 32 times heavier than C-12 atom.
• C. The molecule of oxygen is 32 times heavier thanof a C-12 atom.
• D. The molecule of oxygen is 32 times lighter thanof a C-12 atom.

Answer 1

The correct option is C

The molecule of oxygen is 32 times heavier thanof a C-12 atom.

The molecular mass of a substance indicates the number of times one molecule of the substance is heavier than 1/12 of a carbon-12 atom.