The molar mass of potassium is

Question

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The molar mass of potassium is 39.1 g/mol, which is the atomic mass of potassium rounded to the nearest tenth of a gram. We can find this information on the periodic table. A is incorrect because 19 g/mol is the atomic mass of fluorine. B is incorrect because 31.0 g/mol is the atomic mass of phosphorus. C is incorrect because 6.02 × 1023 is Avogadro's number, which represents the number of particles in one mole of a substance, not the molar mass of potassium. E is incorrect because 15 g/mol is the atomic mass of nitrogen.

The Molar Mass of Potassium Is