what os mole concept and avogadro numbers
Answers
Answered by
0
Amedeo AvogadroAmedeo Avogadro is credited with the idea that the number of entities (usually atoms or molecules) in a substance is proportional to its physical mass.
Avogadro’s number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro’s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1and is expressed as the symbol NA.
Avogadro’s number is a similar concept to that of a dozen or a gross. A dozen molecules is 12 molecules. A gross of molecules is 144 molecules. Avogadro’s number is 6.022×1023molecules. With Avogadro’s number, scientists can discuss and compare very large numbers, which is useful because substances in everyday quantities contain very large numbers of atoms and molecules.
Avogadro’s number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro’s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1and is expressed as the symbol NA.
Avogadro’s number is a similar concept to that of a dozen or a gross. A dozen molecules is 12 molecules. A gross of molecules is 144 molecules. Avogadro’s number is 6.022×1023molecules. With Avogadro’s number, scientists can discuss and compare very large numbers, which is useful because substances in everyday quantities contain very large numbers of atoms and molecules.
Answered by
1
Mole is the SI unit of 'Amount of substance'. 1 mole is defined as the mass equal to the amount of substance which contains as many elementary particles (atoms,molecules and ions etc.)as the number of atons present in 12g of C-12.
as 12 g of C-12 =GAM.
Avagadro calculated the mass of C-atom by x-ray method.Then,he calculate the no. of atoms present in 12g of carbon and it was found to be 6.022*10^-3 atoms.This particular number is called Avagadro's number.
as 12 g of C-12 =GAM.
Avagadro calculated the mass of C-atom by x-ray method.Then,he calculate the no. of atoms present in 12g of carbon and it was found to be 6.022*10^-3 atoms.This particular number is called Avagadro's number.
Similar questions