GENERAL KNOWLEDGE

Detailed explanation-1: -39.10 grams is the molar mass of one mole of K.

Detailed explanation-2: -Potassium has an atomic mass of 39.0983. It signifies that one atom of potassium has a corresponding atomic mass of 39.0983. The number of particles in a mole is always the same. As a result, one mole of potassium is equivalent to 39.0983 grams.

Detailed explanation-3: -What’s important for today’s topic is that numerically, the molar mass is equal to the average atomic mass of the given atom, so we can look it up in the periodic table. For potassium then, it is 39.098 g/mol which means one mole of potassium atoms weighs 39.098 g.

Detailed explanation-4: -The atomic mass of potassium is 39.1.

Detailed explanation-5: -The MOLE (mol) is a unit of measurement that is the amount of a pure substance containing the same number of chemical units (atoms, molecules etc.) as there are atoms in exactly 12 grams of carbon-12 (i.e., 6.022 X 1023).