MONTREAL SEPTEMBER FESTIVALS & Montreal EVENTS. Home | Accommodations | Attractions | Restaurants | Shopping & Services | Nightlife | Discover Areas | Site Map | What's New | About Us | Contact Us | Photography Credit | Advertise With Us | Terms Of Use| FranÃ§ais.
From Wikipedia, the free encyclopedia. Vapor density is the density of a vapour 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. vapor density = mass of n molecules of gas / mass of n molecules of hydrogen. Therefore: vapour density = molar mass of gas / molar mass of H 2.
The relative density, when reference material is water, is called specific density. Reference material to be considered is water and specific density is calculated then a substance with a relative density that is less than one will not sink in water, it will float for sure. For example, if an ice cube is considered it will float as the specific density is less than 1.