CBSE 2022|पदार्थों का पृथक्करण -L1|Separation of Substances|Class 6 NCERT विज्ञान |8PM |Subhadra Mam

A mole is a collection of 6.022 xx 10^23 particles and the number 6.022 xx 10^23 is called Avogadro number. The mass of this number of atoms in an element is equal to its gram atomic mass and mass of this number of molecules in a compound is equal to its gram molecular mass. The volume occupied by this number of molecules of a gas at N.T.P is 22.4 L. When 6.022 xx 10^23 molecules of a substance are dissolved in 1L of solution, the solution is known as 1 molar volume. The mass of 10 molecules of naphthalene (C_(10)H_(8))