How many kilograms in a mole?

Answer 1

It depends on the substance.

A mole is not a unit of mass. It is a unit of quantity, kind of like how "a dozen" means twelve. Except, instead of twelve, it means 6.02*10^23 of something, or

610,000,000,000,000,000,000,000. This number is known as "Avagadro's number"

Usually, a mole refers to a number of atoms or molecules. Avagadro's number is special because an avagadro's number of Atomic Mass Units (the mass of a proton) is equal to one gram.

So, one mole of Hydrogen, which has an atomic mass of 1.008, has a mass of 1.008 grams.

Answer 2

The molar mass of a substance given in grams per mole can be converted to kilograms per mole by dividing by 1000 since there are 1000 grams in a kilogram. For example, the molar mass of carbon is 12 g/mol, so it is 0.012 kg/mol.