Multiple choice

The molecular weight of a substance can be calculated by measuring

  1. density in liquid state

  2. freezing point

  3. vapour density

  4. vapour pressure

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vapor density is the density of a vapor in relation to that of hydrogen. It may be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen.