CBSE - IX - Chemistry
WHAT IS MOLAR MASS , MOLECULAR MASS AND AVAGADRO NO
Molar mass, symbol M, is the mass of one mole of a substance (chemical element or chemical compound).
The molecular mass (abbreviated Mr) of a substance, more commonly referred to as molecular weight and abbreviated as MW, is the mass of one molecule of that substance, relative to the unified atomic mass unit u(equal to 1/12 the mass of one atom of carbon-12
Avogadro number, is the number of atoms in exactly 12 grams of 12C.
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