Also found in: Acronyms.
gram-molecular volume,the volume occupied by one gram-molecular weightgram-molecular weight,
amount of a molecular substance whose weight, in grams, is numerically equal to the molecular weight of that substance. For example, one gram-molecular weight of molecular oxygen, O2
..... Click the link for more information. of any substance at STPSTP
or standard temperature and pressure,
standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0°C; or 273.15°K;.
..... Click the link for more information. . See molar volumemolar volume,
the volume occupied by a mole of a substance at STP. According to Avogadro's law, at a given temperature and pressure a given volume of any gas contains the same number of molecules. At STP 1 mole of gas occupies 22.414 liters.
..... Click the link for more information. .
gram-molecular volume[¦gram mə¦lek·yə·lər ′väl·yəm]
The volume occupied by a gram-molecular weight of a chemical in the gaseous state at 0°C and 760 millimeters of pressure (101,325 pascals).