What is the molar mass of air at standard temperature and pressure?

Answer by  questionkid (146)

Molar mass is defined as the symbol M, and is representative of the mass per unit of a substance. The unit for molar mass is the unit of mass, the kilogram, divided by the unit of substance, which is the mole. The molar mass of dry air at standard temperature and pressure is 0.0289644 kilograms/mole.

Answer by  tamarawilhite (17883)

Standard temperature is 0 degrees Celsius, 273.15 Kelvin, or 32 Fahrenheit. Standard pressure is 1 atmosphere of pressure (sea level), 101.325 kilo-Pascals, 30 inches Mercury (Hg), or 760 tor. At these values, the molar mass of air is 0.07521 pounds per cubic foot or, in metric units, 1.205 kilograms per cubic meter.