Answer – The molar mass of CO is 28.01 g/mol.
Explanation:
Molar mass of a substance = Mass of one mole of the substance
In order to calculate it the atomic masses (or atomic weights) of the elements involved must be known. This information is often available on the periodic table.
CO is carbon monoxide, and is composed of a single atom of each carbon (C) and oxygen (O). Thus, to calculate the molar mass of CO we must know the atomic masses of carbon and oxygen.
Atomic mass of carbon = 12.01 amu
Atomic mass of oxygen = 16 amu
Atomic mass of CO = atomic mass of carbon + atomic mass of oxygen = 12.01 + 16 = 28.01 amu
As the molar mass of any substance is its mass in grams of 1 mole of that substance, it is expressed in g/mol. Therefore, the molar mass of CO is 28.01 g/mol.