explain the following acc to gram atomic mass one gram 28gm N = 2 moles N but acc to gram - Chemistry - Basic Concepts in Chemistry

Question

explain the following
acc to gram atomic mass one gram 28gm N = 2 moles N but acc to gram
molecular mass 28gm N = 1 mole if we can get the no of moles from
gram atomic mass than what is the need og gram molecular mass

Pooja Kacholiya · Accepted Answer

Dear Student,
Gram atomic mass is the molar mass of a single atom only For
example:
N = 14 g/mol
O = 16 g/mol
C = 12 g/mol

Gram molecular mass is the molar mass of complete molecule, and
this molecule could be homodiatomic, heterodiatomic or polyatomic
This is calculated by adding the gram atomic mass of all the atoms
present in the molecule For example:
N2 (homodiatomic) = 28 g/mol
HCl (heterodiatomic) = 36 5 g/mol
CO2 (triatomic) = 44 g/mol

â€‹â€‹â€‹â€‹â€‹â€‹Now
in reality these atoms exist as molecules and therefore for finding
moles, we must require gram molecular mass For finding moles of a
molecule, you are adding atomic masses of atoms, which is molecular
mass itself
Thus for finding moles of polyatomic molecules, there is a
requirement to define the term gram molecular mass Using individual
masses and adding them for finding the moles is same as finding
molecular mass and then calculating moles

I hope your doubt is cleared
Regards

explain the following acc to gram atomic mass one gram 28gm N = 2 moles N but acc to gram molecular mass 28gm N = 1 mole if we can get the no. of moles from gram atomic mass than what is the need og gram molecular mass.

explain the following
acc to gram atomic mass one gram 28gm N = 2 moles N but acc to gram molecular mass 28gm N = 1 mole if we can get the no. of moles from gram atomic mass than what is the need og gram molecular mass.